Leviathan

Appearance
The Leviathan resembles a gargantuan mechanical lobster with two massive claws, two smaller claws, a tail, and several bladed legs. It is teal in color, emblazoned with ancient Atlantean symbols and patterns. It has large glowing red eyes and several tentacle-like appendages surrounding its "mouth", which is its electric blaster.

Trivia

 * Another strong resemblance the design of the Leviathan has, is to the long dead sea creature Jaekelopterus.
 * The Leviathan's piercing roar during it's pursuit of the remaining subpods and Aqua-Evacs containing the expedition crew is actually the roar of a Gallimimus from Jurassic Park.