Stingray

Alien Stingrays where creatures that had tremendous powers and could not control there actions on how they conducted there powers. They where named Alien Stingrays by UNIT as that they resembled Stingrays that swam in Earths Sea.

History
The Avian Stingray could generate wormholes and generated one from San Helios. There they destroyed all its inhabitants and buildings. Thus turning it into a barren sandy planet. They generated another wormhole this time leading it from San Helios to Earth. The Doctor detected this and started to follow the trace on the number 200 bus. The bus fell through the wormhole and it was saved every one on the Bus. But the Bus Driver walked through the Wormhole and died coming back to Earth as a Skeleton. The Doctor and Christina de Souza manged to get the bus back to Earth but three of the Avian Stingray got back. UNIT shot at then and they all got killed. As the Doctor had got back UNIT's scientist Malcolm Taylor Closed the Wormhole so they could not get to Earth. (DW: Planet of the Dead)

Physical appearance
The Avian Stingray had an appearance like a stingray only it was longer and it was made of metal. Because it was made of Metal, it could generate the Wormholes. (DW: Planet of the Dead)

Powers
Because they where made out of metal and could fly so fast in the air they could make wormholes. They could also eat a lifeform whole and then there remains would be turned into sand. (DW: Planet of the Dead)