Epsilon Thalassus is one of the planets that the Hero visits in Chicken Invaders: Cluck of the Dark Side. He has to descend down to Epsilon in order to retrieve the Blade of Revolution. The planet is located in another star system in the Milky Way galaxy.
The planet's surface is mostly dominated by large oceans, as the narrator says that 98% of it's surface is covered with water. That means the other 2% is land.
There are different kinds of aquatic life that populate Epsilon, such as giant octopuses, jellyfish, and other species. Though, Earth also has these sea animals, which makes both planets very similar to each other.