Shelled Meerslug

The Shelled Meerslug is a Saltwater invertebrate found in Pikmin Z. It is similar to a Coral Meerslug, with the exception of keeping its large shell.

Biology
The Shelled Meerslug has evolved to have a large shell, which it uses for protection against predators. However it holds little threat to your party.

Piklopedia entry
''It may appear like a relative to the Coral Meerslug, but it is in fact a completely different species. This is evidence due to its hardened shell, which it retained from its life on land.''

Strategy
It is invincible if it hides itself in its shell, so you're going to have to attack it from the front before it could retreat.