Hermit Crab

Hermit Crabs are uncommon Enemies that can appear in any biome and protect a Barrel if they appear.

Description
Hermit crabs are decapod crustaceans. Most species have long, spirally curved abdomens, which are soft, unlike the hard, calcified abdomens seen in related crustaceans. The vulnerable abdomen is protected from predators by a salvaged empty seashell carried by the hermit crab, into which its whole body can retract. Most frequently, hermit crabs use the shells of sea snails, although the shells of bivalves and scaphopods and even hollow pieces of wood and stone are used by some species. The Hermit Crabs in The Living Infinite use the Barrels as shells and must be killed to retrieve it.

Behavior
Barrels will sometimes be replaced by Hermit Crabs. The Hermit Crabs use Barrels as their shell and will be passively hiding until attacked. To be able to collect the barrel's pickup, it's necessary to kill it so that it drops the barrel. Once disturbed, it attacks similarly to normal crabs, chasing crew members to attack them with its pincers. It has abnormally high health due to its wooden shell and can be dangerous to an unprepared crew.

Trivia

 * Before The Heavy Load Update (0.8), the Hermit Crabs used to hold a crate.
 * Hermit crabs seem to be closely related to the Trash Hermit.