Hermit crab one takes it over. For some larger marine species, supporting one or more sea anemones on the shell can scare away predators. The sea anemone benefits, because it is in position to consume fragments of the hermit crab's meals. Other very close symbiotic relationships are known from encrusting bryozoans and hermit crabs forming bryoliths. When properly sized gastropod shells are not available, hermit crabs have been known to resort to wearing other objects such as tree nut hulls or pieces of beach litter rather than go unprotected. This has become very common in some areas, due not only to the
Rufous-breasted hermit Rufous-breasted hermit The rufous-breasted hermit or hairy hermit ("Glaucis hirsutus") is a hummingbird that breeds from Panama south to Bolivia, and on Trinidad, Tobago and Grenada. It is a widespread and generally common species, though local populations may change in numbers and disappear altogether in marginal habitat It is long and weighs on average. The bill measures around and is strongly decurved, long and thin – though compared to the bills of other hummingbirds, it is rather robust. The rufous-breasted hermit has a brownish head, bronze-green upperparts and rufous underparts. The tail has green central feathers and rufous outer feathers,