Pfuetzi:
Hermit crab. These crabs occupy empty shells of molluscs to protect their fragile bodies. This shell is covered with a stinging hydroid (white "fur").
Dan Hershman:
Bering Hermit crab
Dan Hershman:
blackeyed hermit crab
Dan Hershman:
Hermit Crab Standoff
Okinawa Nature Photography:
Mimicry or am I seeing faces again?
Dan Hershman:
Black-eyed Hermit Crab with a friend
thomas.armstrong:
Crab
Jonathan Vera Caripe:
Cangrejo ermitaño: Dardanus fucosus