When one landed on Earth, it was collected by the research ship Deep Ocean 7, which was collecting stock for the Deep Ocean's fully functioning experimental biosphere at Las Vegas. The Thalatth feasted on the food stocks in the tanks before breaking free from the tank. It was lured into the desert by the Tenth Doctor and Heather, using whale sounds. In the sun's rays, the Thalatth completed its life-cycle and left the Earth as a Solarix Prizmatterfly. (COMIC: Hook, Line and Sinker)