Shellmon

Shellmon is a Sea Animal Digimon whose name and design are derived from the mythological Sazae-oni (栄螺鬼 ? lit. "Shellfish ogre"). It is a hermit crab-like Digimon that lives in the margins of the "Net Ocean". Although it has a turtle-like appearance when its settled inside its shell, for all intents and purposes it has a soft body like a mollusk. Because its body rapidly gets bigger as it grows, it replaces its home each time until it reaches the size of a small mountain. Also, if its body can fit all the way in, it has a habit of settling in completely. Since it has low intelligence and a belligerent personality, you must be careful if you come across a Shellmon. Its special attack is "Hydro Pressure", wherein it fires water that's highly pressurized.

In Ultima, Shellmon are  . They are the result of a Crabmon being injected with Mollusk DNA and placed inside a spiny snail shell to digivolve. They will then digivolve naturally into TerrorShellmon or Anomalocarimon through Digivolution Mutagens.

Attacks
 * Aqua Blaster (Hydro Pressure): Shoots liquid at high pressure.
 * Slamming Attack