Thalatth

The lifecycle of the Thalatth goes from a seed pod (capable of travelling long distances through space in search of water), to huge, multi-limbed savage purple carnivores, with two eyestalks. Ultra violet rays from a sun take the creature through a chrysalis stage to emerge in its final form as a beautiful winged creature literally made of stardust. This final stage of the Thalatth is better known as a Solarix Prizmatterfly.

When one landed on Earth it was collected by the research ship Deep Ocean 7 which was collecting stock for the Deep Ocean fully functioning experimental biosphere at Las Vegas. The Thalatth feasted on the food stocks in the tanks before finally breaking free from the tank. It was lured into the desert by the Tenth Doctor and Heather using whale sounds. In the suns rays the Thalatth was able to complete its life-cycle and leave the Earth as a Solarix Prizmatterfly.