Large numbers of hermit crabs, Coenobita perlata, are found on Baker Island. They rely on the abandoned shells of marine snails for their protection. Other terrestrial arthropods and
mollusks are very poorlyknown.
The entomologist Edward L. Caum
visited Baker Island in 1924 and a number of other naturalists collected
insects on subsequent trips but there are no published accounts or lists.
Recent observations and collections during visits by Service biologists include
house flies, small ants, moths and millers, butterflies, spiders, and anearthworm.