Omanyte

Omanyte is a very-rare Rock, Water-type Pokémon from Kanto region. It evolves into Omastar when fed with 50 candies.

Pokédex description
Spiral Pokémon

''Omanyte is one of the ancient and long-since-extinct Pokémon that have been regenerated from fossils by people. If attacked by an enemy, it withdraws itself inside its hard shell.''

Evolution family
Omanyte is the part of a two-member family.