Paguroidea

Hermit crabs are decapod crustaceans of the superfamily Paguroidea. Most of the 1100 species possess an asymmetrical abdomen which is concealed in an empty gastropod shell that is carried around by the hermit crab.
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source	iNaturalist is a citizen science platform and online social network that allows users to record and share observations about biodiversity, as well as assist in species identification. The platform allows users to upload photos or videos of plants, animals, and other organisms, which can then be identified by a community of other users. In addition, iNaturalist also has an automatic identification feature that uses computer vision to help identify species.