The Thalassa was a cross of, a Killer Whale, A Great White Shark, and a Komodo Dragon. It had a tail much like the Great White, it was boney and very sharp. It was a lizard like the Komodo Dragon. The Komodo Dragon is actually a descendant or a relative of the Thalassa. As for the Killer Whale, the Thalassa would eat much like a Killer Whale. The Thalassa has very large and sharp teeth, sharp enough to chew and eat bones.

Ours is the only one with life because it is not too far away or close too the sun. Planets like Mars are too close to the sun to produce any life everything there would burn up. Any planet behind us would freeze.