Editing Sea Devil

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{{Infobox Species
|image       = <gallery>
SDprofile1.png|A
SDprofile2.png|B
SDprofile3.png|C
</gallery>
|type        = Reptilian humanoid
|aka         = Sea-Devil, ocean demon, [[Deep One]], Aquatic Silurian, [[Earth Reptile]], ''Homo Reptilia'', ''Reptilia Sapiens''
|affiliation = [[Silurian]]s
|origin      = [[Earth]]
|first       = The Sea Devils (TV story)
|appearances = {{appears}}
|individuals = {{csl|[[Chief Sea Devil (The Sea Devils)|Chief Sea Devil]]|[[Sauvix]]|[[Daniel Claremont]]|[[Marsissus]]}}
|clip        = The Master Summons the Sea Devil - The Sea Devils - Doctor Who - BBC
|bts         = Behind the Sea Devils' Return - Legend of the Sea Devils - Doctor Who
}}{{dab page|Sea Devil (disambiguation)}}
The '''Sea Devils''', or '''Sea-Devils''', ([[PROSE]]: ''[[Doctor Who and the Sea-Devils (novelisation)|Doctor Who and the Sea-Devils]]'') also called '''ocean [[demon]]s''', ([[TV]]: ''[[Legend of the Sea Devils (TV story)|Legend of the Sea Devils]]'') '''[[Deep One]]s''', ([[GAME]]: ''[[Lost in Time (video game)|Lost in Time]]'') the '''Aquatic Silurians''' ([[PROSE]]: ''[[Blood Heat (novel)|Blood Heat]]'', ''[[A brief lowdown on the Sea Devils (feature)|A brief lowdown on the Sea Devils]]'') '''''Reptilia sapiens''''' ([[AUDIO]]: ''[[Tidal Wave (audio story)|Tidal Wave]]'') or '''''Reptillia Sapiens''''', and '''Homo Reptillia''' were amphibious [[Earth reptile]]s. ([[PROSE]]: ''[[A brief lowdown on the Sea Devils (feature)|A brief lowdown on the Sea Devils]]'') Like their land-based cousins, the [[Silurian]]s, they lived in [[Distant past|prehistoric times]] in a scientifically-advanced civilisation.

As their aquatic colonies awoke from [[suspended animation]], these one-time rulers of the [[Earth]] attempted to reclaim their [[planet]], leading to conflict with the new rulers: [[human]]kind.

Historians who had been allowed access to the "[[Monster Vaults]]" of the [[TARDIS information system|databanks]] in [[the Doctor's TARDIS]] observed that the Sea Devils were named as such by unfamiliar humans while the name was also used by the Sea Devils themselves as well as the Silurians, their explanation being that it was the proper name for the species which humans retained as ancient [[race memory|race memories]]. ([[PROSE]]: ''[[The Monster Vault (novel)|The Monster Vault]]'') The [[Ninth Doctor]], however, used ''Reptilia sapiens'', identifying "Sea Devil" as an offensive term. ([[AUDIO]]: ''[[The Seas of Titan (audio story)|The Seas of Titan]]'')

== Biology ==
=== Overview ===
[[File:Sea Devil Hatching.jpg|thumb|left|An infant Sea Devil, directly after hatching from their egg ([[WC]]: ''[[Defenders of Earth (webcast)|Defenders of Earth]]'')]]
The Sea Devils were related to the [[Silurian]]s, ([[TV]]: ''[[Warriors of the Deep (TV story)|Warriors of the Deep]]'') though they were genetically divergent enough to create problems for the [[offspring]] of such matings. ([[PROSE]]: ''[[The Scales of Injustice (novel)|The Scales of Injustice]]'') The [[Twelfth Doctor]] ([[PROSE]]: ''[[A History of Humankind (novel)|A History of Humankind]]'') and historians identified the Sea Devils as an example of a Silurian [[subspecies]], being descended from Silurians whom were forced to adapt to [[life]] underwater. ([[PROSE]]: ''[[The Monster Vault (novel)|The Monster Vault]]'') [[Jo Jones]] described Sea Devils as "a fascinating deep sea species". Sea Devils hatched from [[egg]]s and started out life as [[infant]]s. The hatching cycle of Sea Devils active in the [[21st century]] was also affected by [[global warming]], with many Sea Devil nests being established on land instead of out at sea. ([[WC]]: ''[[Defenders of Earth (webcast)|Defenders of Earth]]'')

Like the Silurians, variations existed among the Sea Devils with different [[subspecies]] and appearances. Sea Devils typically looked somewhat like [[humanoid]] [[turtle]]s or [[plesiosaurus|plesiosaurs]]. They had beak-like [[mouth]]s, large [[eye]]s, two fins on their [[head]] and long [[neck]]s. They had three webbed digits on their [[hand]]s and [[foot|feet]]. Their [[skin]] tones came in a variety of shades, including [[green]], [[blue]] and [[Orange (colour)|orange]]. They were much tougher than [[human]]s, since they needed to survive the crushing depths of the [[ocean]]. Sea Devils communicated in a [[language]] like [[sonar]], but they could speak human languages in a whispering, rasping [[voice]]. ([[TV]]: ''[[The Sea Devils (TV story)|The Sea Devils]]'') A Sea Devil's skin was slimy to the touch. ([[PROSE]]: ''[[The Silurian Gift (novel)|The Silurian Gift]]'')

One group of Sea Devil warriors, which appeared at [[Sea Base 4]], were notably distinguished by their [[Silver (colour)|silver]] skin and their lack of head fins. ([[TV]]: ''[[Warriors of the Deep (TV story)|Warriors of the Deep]]'')

=== Warrior-class subspecies ===
[[File:Ravenscaur_Sea_Devils.jpg|thumb|right|An advanced sub-species of Sea Devil lived on the [[Raven Peninsula]]. ([[COMIC]]: ''[[Clara Oswald and the School of Death (comic story)|Clara Oswald and the School of Death]]'')]]
Another subspecies of Sea Devil, suggested by the [[Twelfth Doctor]] to be a "[[warrior]]-class", were larger, faster, and stronger than those that he was familiar with. Their muscular bodies sported dark green skin, small red eyes, a pronounced jaw, and a large tail. They lived on the [[Raven Peninsula]]. They could communicate using a form of sound-based telepathy and could use this ability as a weapon by producing a deadly sonic scream. ([[COMIC]]: ''[[Clara Oswald and the School of Death (comic story)|Clara Oswald and the School of Death]]'')

There also existed a class of Sea Devils who were much smaller, about the size of an infant human, that could merge with a human host, creating a human-Sea Devil hybrid but with the Sea Devil's psyche dominating its host. They possessed the sound-based abilities of their warrior-class counterparts but also displayed potent psionic powers, specifically telekinesis. The Twelfth Doctor explained that this was a side effect of two minds merging into one. ([[COMIC]]: ''[[Clara Oswald and the School of Death (comic story)|Clara Oswald and the School of Death]]'')

== Culture ==
The Sea Devils worshipped the [[Great Old One]] known as [[Dagon]] as their [[god]]. ([[PROSE]]: ''[[All-Consuming Fire (novel)|All-Consuming Fire]]'') They were determined to retake the planet from the [[human]]s. They held an unwavering view that, as the original rulers, it would always be their right to do so. However, they were willing to make peace with humans, but they quickly changed their minds when they were under attack from the surface. ([[TV]]: ''[[The Sea Devils (TV story)|The Sea Devils]]'') Even though encounters between the Sea Devils and humanity often devolved into conflict in the 20th and 21st centuries as they battled for control of Earth, ([[COMIC]]: ''[[Clara Oswald and the School of Death (comic story)|Clara Oswald and the School of Death]]'', et. al) [[the Doctor]] noted that the Sea Devils were largely peacefully, fighting only if they believed it to be needed ([[TV]]: ''[[Legend of the Sea Devils (TV story)|Legend of the Sea Devils]]'') or if they had been manipulated. ([[TV]]: ''[[The Sea Devils (TV story)|The Sea Devils]]'')

As such, the [[Thirteenth Doctor]] was surprised to meet [[Marsissus|one Sea Devil chief]] who prepared for mass-human genocide before even attempting peace. She reasoned that he was simply "the bad egg" of his kind. ([[TV]]: ''[[Legend of the Sea Devils (TV story)|Legend of the Sea Devils]]'') Sea Devils were very protective of their young. It was a privilege for non-Sea Devils to watch one of the young hatch. ([[WC]]: ''[[Defenders of Earth (webcast)|Defenders of Earth]]'')

=== Pirate Sea Devils ===
[[File:Pirate Sea Devil.jpg|thumb|left|One of the [[Pirate Sea Devil]]s, known for their flamboyant sense of dress. ([[GAME]]: {{cs|Worlds Apart (video game)}})]]
[[Pirate Sea Devil]]s ([[TV]]: {{cs|Legend of the Sea Devils (TV story)}}) were a subgroup of Sea Devils who had spread to "the depths of the oceans on various planets". They were "known for their advanced technology, cunning strategies, and a penchant for pillaging and plundering", being "often seen as cosmic marauders who navigate[d] the [[time and space continuum]] raiding planets and spacecraft with impunity". These Pirate Sea Devils' society was structured around a "brutal hierarchy", with ruthless [[captain]]s answering to no shared higher authority exerting sole dominance over the "aquatic realms". They were said to "typically don flamboyant, pirate-themed attire, complete with eyepatches, tricorn hats, and cutlasses". ([[GAME]]: {{cs|Worlds Apart (video game)}})

== Technology ==
The Sea Devils were more advanced than the [[human]]s of the [[20th century]] when they went into [[hibernation]]. They had [[colony|colonies]] around the world, each filled with thousands of Sea Devils. ([[TV]]: ''[[The Sea Devils (TV story)|The Sea Devils]]'') The colonies could be awakened ''en masse'' through the use of a [[sonic signal]]. ([[TV]]: ''[[The Sea Devils (TV story)|The Sea Devils]]'') They built their underwater colonies inside caves. One base, located near a sea-fort, had simple grey-black-coloured walls, ([[TV]]: ''[[The Sea Devils (TV story)|The Sea Devils]]'') while another appeared to be carved into the rock, and was covered in algae and seaweed. ([[TV]]: ''[[Warriors of the Deep (TV story)|Warriors of the Deep]]'')

They also used special orange capsules to transport land-dwelling creatures. ([[TV]]: ''[[The Sea Devils (TV story)|The Sea Devils]]'')

[[File:Master Sea Devil radar.jpg|thumb|right|A Sea Devil tracking radar ([[TV]]: ''[[The Sea Devils (TV story)|The Sea Devils]]'')]]
The Sea Devils had stockpiles of [[weapon]]s in these bases. They typically used small, round, side arms. ([[TV]]: ''[[The Sea Devils (TV story)|The Sea Devils]]'') During their invasion of [[Sea Base 4]], they made use of a larger version of the device to cut through the doors. ([[TV]]: ''[[Warriors of the Deep (TV story)|Warriors of the Deep]]'') The group that commandeered the ship of Sin Ji-Hun wielded swords instead, with their captain using a special, technologically advanced blade with a glowing section down the centre that could inject a lethal poison into those it wounded. ([[TV]]: ''[[Legend of the Sea Devils (TV story)|Legend of the Sea Devil]]'')

The Sea Devils which attacked [[HMS Seaspite]] wore gauze-like dresses. ([[TV]]: ''[[The Sea Devils (TV story)|The Sea Devils]]'') The Sea Devils warriors in the [[2084]] invasion wore thick black [[armour]] reminiscent of [[samurai]] armour. ([[TV]]: ''[[Warriors of the Deep (TV story)|Warriors of the Deep]]'')

The Sea Devils that attacked [[Ravenscaur Island]] had an enormous underground colony located in a network of [[cave]]s that artificially reproduced the environment and [[climate]] of prehistoric Earth, indicating they had advanced [[terraforming]] and environmental technology.

They had colossal war machines that were shaped like giant metal spheres with tentacles that could pierce through the hull of a human battleship easily.

Sea Devils also had large [[submarine]]s heavily armed with [[laser]] armaments that could easily outmatch an aircraft carrier with its speed and firepower.

A fearsome piece of technology they possessed was [[sonic destructor]]s. These were enormous tower-like structures that produced [[sonic pulse]]s capable of sinking an entire [[island]] by causing intense [[earthquake]]s. ([[COMIC]]: ''[[Clara Oswald and the School of Death (comic story)|Clara Oswald and the School of Death]]'')

== History ==
=== Dominance ===
According to historians, the Sea Devils evolved from a group of Silurians during a period of tectonic upheaval, when conditions on the [[land]] deteriorated and the Silurians had to spend more time [[feeding]] and [[breeding]] in the [[sea]] until it became their sole [[habitat]]. ([[PROSE]]: ''[[The Monster Vault (novel)|The Monster Vault]]'') On [[28 January]] [[BC|425,000,000 BC]], the Sea Devils signed a [[Peace treaty|peace deal]] with the [[Silurian]]s. ([[PROSE]]: ''[[Time Traveller's Diary (novel)|Time Traveller's Diary]]'') The Sea Devils ruled the [[Earth]] when [[human]]s were [[ape]]s, just as the Silurians did. ([[TV]]: ''[[The Sea Devils (TV story)|The Sea Devils]]'')

Both the Silurian and Sea Devil races were led by the [[Triad]], their "custodians". ([[TV]]: ''[[Warriors of the Deep (TV story)|Warriors of the Deep]]'') While [[Marsissus|one Sea Devil chief]], whom the [[Thirteenth Doctor]] wrote off as a [[zealot]], claimed the Earth had been covered "in glorious aqua" during the age of his kind, ([[TV]]: ''[[Legend of the Sea Devils (TV story)|Legend of the Sea Devils]]'') the Sea Devils and Silurians lived alongside each other, ([[TV]]: ''[[Warriors of the Deep (TV story)|Warriors of the Deep]]'') with the Silurians ruling over warm landmasses ([[PROSE]]: ''[[Blood Heat (novel)|Blood Heat]]'', [[TV]]: ''[[The Hungry Earth (TV story)|The Hungry Earth]]'') while their underwater cousins lived within the [[sea]]s. ([[TV]]: ''[[Warriors of the Deep (TV story)|Warriors of the Deep]]'')

[[File:SeaDevilsHibernate.jpg|thumb|left|Sea Devils hibernate ([[TV]]: ''[[Warriors of the Deep (TV story)|Warriors of the Deep]]'')]]
When [[the Moon]] approached Earth, ([[TV]]: ''[[Doctor Who and the Silurians (TV story)|Doctor Who and the Silurians]]'') the Silurian and Sea Devil scientists calculated a great catastrophe in which "all life" would be wiped out ([[TV]]: ''[[Doctor Who and the Silurians (TV story)|Doctor Who and the Silurians]]'', ''[[The Sea Devils (TV story)|The Sea Devils]]'') by the Moon "sweep[ing] by Earth" ([[PROSE]]: ''[[Doctor Who and the Cave-Monsters (novelisation)|Doctor Who and the Cave-Monsters]]'') and drawing away the atmosphere. ([[TV]]: ''[[Doctor Who and the Silurians (TV story)|Doctor Who and the Silurians]]'') The [[Third Doctor]] repeated the claim to [[Marc Marshall]] that the Silurians built the shelters when they thought the planet would "suck away" Earth's atmosphere as it rushed by. ([[PROSE]]: ''[[The Scales of Injustice (novel)|The Scales of Injustice]]'')

Conversely, the [[Fifth Doctor]] recalled that the Silurian astronomers predicted that Earth was about to be "struck" by the planet at the time, ([[PROSE]]: ''[[Warriors of the Deep (novelisation)|Warriors of the Deep]]'') and the [[Eleventh Doctor]] described the trajectory of the planet the astronomers had predicted as a "crash course". ([[TV]]: ''[[Cold Blood (TV story)|Cold Blood]]'') The catastrophe did not happen as predicted, and the Sea Devils remained inside their [[hibernation unit]]s. During millions of years of hibernation, the reactivation machinery of the hibernation units deteriorated. ([[TV]]: ''[[The Sea Devils (TV story)|The Sea Devils]]'') There were millions of hibernating Sea Devils across the globe. ([[GAME]]: ''[[Lost in Time (video game)|Lost in Time]]'')

=== Awakenings ===
==== 16th century ====
[[File:Sea Devil captured by pirates.jpg|thumb|right|A Sea Devil captured by pirates. ([[COMIC]]: ''[[Devil of the Deep (comic story)|Devil of the Deep]]'')]]
A lone [[Sea Devil (Devil of the Deep)|Sea Devil]] scientist was prematurely awakened around the late [[16th century]] due to a defective [[hibernator]], proceeding to study how [[Earth|the world]] had changed during his [[sleep]]. After ten years, the Sea Devil rescued and befriended a [[human]], [[Diego de Columba of Cordoba]], who had washed up on the [[beach]]. Unfortunately, the Sea Devil was later captured by [[pirate]]s, one of whom inadvertently activated his device which called a creature to awake from under the [[sea]], proceeding to destroy the pirates' ship. Diego presumed the Sea Devil to have perished with the pirates. ([[COMIC]]: ''[[Devil of the Deep (comic story)|Devil of the Deep]]'')

Also in the early [[16th century]], a [[zealot]] [[Marsissus|Chief Sea Devil]] became active alongside his [[crew]] in the seas of [[China]]. Capturing [[Flor de la Mar|the ship]] of the "great captain" [[Sin Ji-Hun]] in order to "strike fear" into the hearts of the "[[land crawler]]s", he and his band became fearsome [[pirate]]s. The Chief Sea Devil sought a particular gemstone, [[the Keystone]], actually of Sea Devil origin, which he wanted to use to flood the entire Earth, wiping out humanity. However, Ji-Hun had managed to sneak the Keystone off the ship before the Sea Devils captured it, and his second-in-command [[Lei Bao]] was eventually able to use the Keystone himself to freeze the Chief Sea Devil in time, turning him into a [[statue]] on the shore. His crew returned to hibernation, awaiting his return. ([[TV]]: ''[[Legend of the Sea Devils (TV story)|Legend of the Sea Devils]]'')

==== 19th century ====
In [[1807]], [[Zheng Yi Sao|Madam Ching]], a notorious [[pirate]] who was looking for the [[lost treasure of the Flor de la Mar|lost treasure of the ''Flor de la Mar'']], travelled to the small Chinese village where [[Marsissus|the petrified Chief Sea Devil pirate]] was still watched over by the descendants of [[Lei Bao]]. Misunderstanding the legends and believing a map to the treasure was hidden within the statue, she accidentally released the Chief Sea Devil, who slaughtered the village and called his crew out of hibernation. However, the [[Thirteenth Doctor]] and her [[companion]]s teamed up with Madam Ching, as well as [[Sin Ji-Hun]], whom the Sea Devils had kept locked in a living death for all these centuries as a punishment for tricking them, to stop his plan. Shortly after Ji-Hun stabbed the Chief Sea Devil to death in a duel, he and the Doctor managed to rig the pirate Sea Devils' base to explode, killing them all, destroying [[the Keystone]], and stopping the Chief Sea Devil's plan to flood the Earth from coming to pass. ([[TV]]: ''[[Legend of the Sea Devils (TV story)|Legend of the Sea Devils]]'')

==== 20th century ====
[[File:1909 Sea Devils.jpg|thumb|left|Sea Devils emerge from their hibernation units in [[1909]]. ([[COMIC]]: ''[[Clara Oswald and the School of Death (comic story)|Clara Oswald and the School of Death]]'')]]
In [[1909]], a group of Sea Devil woke up beneath [[Raven Peninsula]]. They used [[terraforming]] technology to create an earthquake which separated the peninsula from the main land. Ravenscaur became known as [[Raven's Isle]]. The Sea Devils infiltrated [[Ravenscaur School|the school]] and village on the island by turning the humans into Sea Devils. ([[COMIC]]: ''[[Clara Oswald and the School of Death (comic story)|Clara Oswald and the School of Death]]'')

In [[1972]] or [[1982]], ([[COMIC]]: ''[[Clara Oswald and the School of Death (comic story)|Clara Oswald and the School of Death]]'') a group of Sea Devils hibernating beneath the [[English Channel]] were awoken by {{Delgado}}. He attempted to persuade them to reclaim the planet from the human race. Despite the Third Doctor's efforts to convince them otherwise, hostilities escalated when Private Secretary [[Walker (The Sea Devils)|Walker]] ordered the [[Royal Navy]] to attack the base, and the Sea Devils decided to go to war with the humans. However, before they could use the Master's [[sonar]] device to reactivate more bases, the Doctor blew up their base by overloading the devices by [[Reverse the polarity of the neutron flow|reversing the polarity of the neutron flow]], preventing the war between humans and Sea Devils from starting. ([[TV]]: ''[[The Sea Devils (TV story)|The Sea Devils]]'')

When a temporal crisis swept across the universe, making [[TARDIS]] travel impossible except between a network of [[Waypoint]]s supercharged with [[vortex energy]], one of these Waypoints was [[Atlantis]], caught in a [[time eddy]] in its final moments because of the [[Crystal of Kronos]]. There was a Sea Devil hibernation colony close to Atlantis. They were awakened by the Doctors' manipulation of the vortex energy, and began causing trouble in what was, from [[UNIT]]'s perspective, the 20th century a short time after the prior Sea Devil incident — notably tripping several [[NATO]] anti-submarine monitoring systems. [[Martha Jones]], who had discovered the coordinates of Atlantis in the [[21st century]], returned to them with UNIT backup, only for the UNIT representative to be a young [[Liz Shaw]] instead of her contemporaries due to the temporal anomaly. The two met a [[Sea Devil (Lost in Time)|Sea Devil]] representative, who told them that their base was preparing to send a worldwide signal to awaken all other Sea Devil colonies. They pleaded with the Sea Devil to delay the signal so that proper peace talks with humanity could be held first, and the Sea Devil agreed to consider the offer. Martha and Liz called [[the Doctor]] on Martha's mobile phone, who arrived in the form of the [[Thirteenth Doctor]] and began negotiating with the Sea Devil. ([[GAME]]: ''[[Lost in Time (video game)|Lost in Time]]'')

In [[1983]], [[Sarah Jane Smith]] and [[K9 Mark III|K9]], visiting [[Warren Martyn]]'s [[archaeology|archaeological]] expedition in [[Egypt]], discovered an underground city of Silurians and Sea Devils. Sarah Jane opened diplomatic relations with them. On her return to England, she contacted the Brigadier, who wished to make amends for his earlier mistakes. ([[COMIC]]: ''[[City of Devils (comic story)|City of Devils]]'')

==== Early 21st century ====
{{Section stub|Information from [[AUDIO]]: ''[[Tidal Wave (audio story)|Tidal Wave]]''}}
[[File:Jo, Osgood and a Sea Devil at Charybdis.jpg|thumb|right|[[Jo Jones]] and [[Petronella Osgood]] encounter Sea Devil at [[Project Charybdis]]. ([[AUDIO]]: ''[[Tidal Wave (audio story)|Tidal Wave]]'')]]
In the early [[21st century]], a colony of both Silurians and Sea Devils were discovered under the [[South Pole]]. After a corrupt businessman attempted to blackmail them into providing him with a unique energy source, they revolted, with the Sea Devils launching an attack. They were forced back into hibernation by the Eleventh Doctor, who collapsed the crevice leading to their colony afterwards. ([[PROSE]]: ''[[The Silurian Gift (novel)|The Silurian Gift]]'')

In [[2015]], the Sea Devils at Ravenscaur School were discovered by [[Christel Dean]] who alerted [[Clara Oswald]] and the [[Twelfth Doctor]] to their presence. When the Sea Devils declared open war on humanity, the Doctor managed to turn their sonic devastators back on them, wiping them out. ([[COMIC]]: ''[[Clara Oswald and the School of Death (comic story)|Clara Oswald and the School of Death]]'') Sometime before the shutdown of [[UNIT]], a group of Sea Devils had attacked a classified military base in [[South Wales]], leaving [[Brigadier]] [[Winifred Bambera]] missing in action. ([[PROSE]]: ''[[At Childhood's End (novel)|At Childhood's End]]'')

By the [[2020s]], Sea Devil communities had been forced to establish their nests on land instead of in the ocean due to the rise in [[climate change]] affecting their hatching cycles. One colony of Sea Devils that was based just off a coastline came to the attention of Jo Jones, who arrived in time to stop a guarding Sea Devil from attacking the young couple [[Kat (Defenders of Earth)|Kat]] and [[Alex (Defenders of Earth)|Alex]] in order to protect the eggs. Shortly afterward, one of the three eggs hatched, and Jo helped the infant Sea Devil out to sea so the young creature could join up with the colony. After she assured Kat and Alex that the other two eggs would hatch by the time the parents would return, a Sea Devil walked out of the ocean onto the beach once they departed. ([[WC]]: ''[[Defenders of Earth (webcast)|Defenders of Earth]]'')

==== Late 21st century ====
[[File:Warriors of the Deep.jpg|thumb|left|A colony of Sea Devils are awoken by the [[Silurian]]s in [[2084]]. ([[TV]]: ''[[Warriors of the Deep (TV story)|Warriors of the Deep]]'')]]
A colony of Sea Devils were awoken in [[2084]] by a group of Silurians who believed peace with humanity was impossible. Alongside [[Myrka (Warriors of the Deep)|a Myrka]], the Sea Devils were sent as shock troops to invade [[Sea Base 4]] to ignite the war the base had been built to fight in. Although they were better prepared, they were all killed by the [[Hexachromite gas]] used by the Fifth Doctor, who proclaimed that "there should have been another way" as he looked over the remains of the Silurians and Sea Devils. ([[TV]]: ''[[Warriors of the Deep (TV story)|Warriors of the Deep]]'')

=== Post-contact ===
By the [[26th century]], the inter-species conflicts appeared to have come to an end. Silurians and Sea Devils were accepted into Earth society, and the term "[[Earth Reptile]]" was apparently popularised among humans. ([[PROSE]]: ''[[Love and War (novel)|Love and War]]'')

Because of humanity's [[pollution]] of the seas of Earth, a number of Sea Devils and humans had, by the [[2600s]], colonised the planet [[Chosan (planet)|Chosan]], which was being attacked by [[Calabraxian]] terrorists. The [[Earth Reptile Council]] asked the [[Braxiatel Collection]] for aid. They sent [[Bernice Summerfield]]. She found the ocean planet held a sentient protein in the waters which had began to infect the water-dwelling Sea Devils. The entities attempted to possess the Sea Devils and use them as an army against the humans but faced difficulty in integrating themselves into the host's biology. This led to mutations. They took the Sea Devil [[Lurnix]] as a host. They tried to have Lurnix lower the security grid and infect all the Sea Devils for an army. However, Bernice Summerfield evacuated the colony and detonated a bomb at Chosan, ending that threat. The Sea Devils were forced to abandon the Chosan colony due to the continuing threat. ([[AUDIO]]: ''[[Professor Bernice Summerfield and the Poison Seas (audio story)|The Poison Seas]]'')

[[File:I dream of Devils.jpg|right|thumb|[[Jo Grant]] hallucinates about a Sea Devil. ([[TV]]: ''[[Frontier in Space (TV story)|Frontier in Space]]'')]]
In the [[30th century]], the Earth Reptiles were part of the [[Earth Empire]] and were considered full members of that government as an Earthborn species. ([[PROSE]]: ''[[So Vile a Sin (novel)|So Vile a Sin]]'') In the [[32nd century]], it became illegal on [[Dramos (asteroid)|Dramos]] to trade in Earth Reptile pituitary analogue extract. ([[PROSE]]: ''[[Burning Heart (novel)|Burning Heart]]'')

In the [[52nd century]], [[Vertebrae Rax]] was brought up on legends of his people's reign on prehistoric Earth and later joined a failed raid on [[the Maldovarium]] in hopes of stealing a [[vortex manipulator]] to travel back to that era. ([[PROSE]]: ''[[The Heist (short story)|The Heist]]'')

In the [[101st century]], the Earth Reptiles were part of [[the Union]]. ([[PROSE]]: ''[[The Crystal Bucephalus (novel)|The Crystal Bucephalus]]'')

=== Undated events ===
[[File:Destiny sea demon.JPG|thumb|A Sea Devil in the TARDIS. ([[GAME]]: ''[[Destiny of the Doctors (video game)|Destiny of the Doctors]]'')]]
During the [[Last Great Time War]], a [[Sea Devil (The Forgotten)|Sea Devil]] was imprisoned by [[prison guard (The Forgotten)|an unknown force]]. ([[COMIC]]: ''[[The Forgotten (comic story)|The Forgotten]]'') A group of Sea Devils were imprisoned in the TARDIS by the Master. ([[GAME]]: ''[[Destiny of the Doctors (video game)|Destiny of the Doctors]]'') A Sea Devil was worth an unidentified amount of points in the [[I-Spyder Book of Earth Creatures]] if it was spotted. ([[PROSE]]: ''[[The Last Dodo (novel)|The Last Dodo]]'')

[[File:Buch der Befrei9.jpg|thumb|left|A drawing of a Sea Devil from an [[Anubian]] book. ([[TV]]: ''[[Curse of Anubis]]'')]]
As shown in the [[Anubian Book of Deliverance]], the [[Anubian]]s attacked the Sea Devils. ([[TV]]: ''[[Curse of Anubis]]'')

A Sea Devil visited the beach on [[Beachelguese]] with a [[Silurian]] and a [[Macra]]. ([[COMIC]]: ''[[Surfshock (comic story)|Surfshock]]'')

The [[Pirate Sea Devil]]s were a faction of Sea Devils who spread across the universe, making their home in the oceanic depths of various worlds while engaging in space piracy. [[The Doctor]] and the Pirate Sea Devils clashed "throughout time and space" on a great number of occasions, resulting in "epic confrontations as the Doctor [sought] to thwart their malevolent plans and protect innocent civilizations from their rapacious ambitions". ([[GAME]]: {{cs|Worlds Apart (video game)}})

=== Alternate histories ===
In one [[Silurian Earth|alternative version]] of the [[1990]]s, the Doctor having died during the Wenley Moor incident, the Silurians ruled Earth unchecked while the Sea Devils served them as underwater soldiers. ([[PROSE]]: ''[[Blood Heat (novel)|Blood Heat]]'')

In an [[Alternate timeline (Time & Time Again)|alternate timeline]] created by the [[Black Guardian]] where the [[First Doctor]] never left [[Gallifrey]] and became [[Lord President]], the Sea Devils and the Silurians fought over the [[Earth]] along with several species of [[alien]] invaders. This timeline was destroyed when the [[Seventh Doctor]] retrieved the [[Key to Time]]. ([[COMIC]]: ''[[Time & Time Again (comic story)|Time & Time Again]]'')

In an [[Sea Devil Earth|alternate timeline]] created by a paradox caused by an [[Multi-Doctor Event|encounter]] between the [[Thirteenth Doctor|Thirteenth]] and [[Tenth Doctor|Tenth]] Doctors, the [[Skithra]] awoke the Sea Devils in the [[Raven Peninsula]] in [[1903]] to conquer Earth on their behalf. By [[2020]], the Sea Devils ruled Earth. This timeline was erased when a [[Skithra Queen (Alternating Current)|Skithra Queen]] and [[Rose Tyler (Sea Devil Earth)|Rose Tyler]], who had been brought back in time by the two Doctors, killed the Skithra drones before they awoke the Sea Devils in 1903. ([[COMIC]]: ''[[Alternating Current (comic story)|Alternating Current]]'')

In an [[parallel universe|alternate dimension]] in which [[the Doctor]]'s adventures existed as a fictional TV show called ''[[Doctor Who (The Girl Who Loved Doctor Who)|Doctor Who]]'', a fan dressed as a Sea Devil was present at a ''Doctor Who'' convention which the [[Eleventh Doctor]] visited with [[Ally (The Girl Who Loved Doctor Who)|Ally]] in [[2013]]. ([[COMIC]]: ''[[The Girl Who Loved Doctor Who (comic story)|The Girl Who Loved Doctor Who]]'')

=== The Sea Devils of Mondas ===
{{Main|Sea Devil (Mondasian)}}
The planet [[Mondas]] had lifeforms identical to Sea Devils. ([[COMIC]]: ''[[The Hungry Sea (comic story)|The Hungry Sea]]'')

== Other references ==
In the [[video game]] ''[[Happy Deathday]]'', played by [[Izzy Sinclair]] on the [[Time-Space Visualiser]], a Sea Devil was among a host of "every single [[enemy]]" that [[the Doctor]] had ever [[defeat]]ed, who were assembled by the [[Beige Guardian]] and pitted against the Doctor's first eight [[incarnation]]s. ([[COMIC]]: ''[[Happy Deathday (comic story)|Happy Deathday]]'')

[[UNIT]] [[UNIT Case Ref: 9938334t|case file 9938334t]] concerned the Sea Devils. ([[PROSE]]: ''[[A brief lowdown on the Sea Devils (feature)|A brief lowdown on the Sea Devils]]'')

== Behind the scenes ==
[[File:Scarlet Game Sea Devil & Silurian.jpg|thumb|A depiction of a Sea Devil and Silurian in ''Scarlet Traces: The Great Game''.]]
* A Sea Devil was to have appeared as one of the dead prisoners on the spaceship in ''[[The Stones of Blood (TV story)|The Stones of Blood]]''. Although [[Malcolm Hulke]] was paid a copyright fee, shots of the creature were lost at the editing stage.
* Ironically, the Sea Devils do not feature in the comic story entitled ''[[The Sea Devil (comic story)|The Sea Devil]]''.
* The [[Alan Moore]] graphic novel series {{wi|The League of Extraordinary Gentlemen}} refers to lizard-men called [[Silurian]]s and Sea Devils and retcons {{w|Gill-man|the Creature from the Black Lagoon}} as one of the latter.
* The Sea Devil and [[Silurian]] are shown as the original inhabitants of Earth in the steampunk graphic novel {{wi|Scarlet Traces|Scarlet Traces: The Great Game}}.
* The mention of the Sea Devils worshipping the Great Old One [[Dagon]] in ''[[All-Consuming Fire (novel)|All-Consuming Fire]]'' conflates them with the {{w|Cthulhu Mythos}}'s {{w|Deep One}}<nowiki/>s, an ancient race of fish-like humanoids created by H. P. Lovecraft in his short story ''The Shadow Over Innsmouth''. Aside from minor differences in physical features, the principal trait of the [[Deep One]]s not exhibited by the Sea Devils is their immortality; the Deep Ones do not age, though they can still be killed through violence. Additionally, the Deep Ones can interbreed with humanity (a trait referenced in ''[[Guardian At The Gate (audio story)|Guardian At The Gate]]''), whereas mating even between Sea Devils and their close cousins the Silurians is shown to be problematic in ''[[The Scales of Injustice (novel)|The Scales of Injustice]]''.
* The image of a Sea Devil appears on the cover of the [[Fourth Doctor]]-era book ''[[The Amazing World of Doctor Who]]''.
{{Homo Reptilian stories}}

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[[Category:Amphibious species]]
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