hermit crab

US /ˈhɜːr.mɪt ˌkræb/
UK /ˈhɜːr.mɪt ˌkræb/
"hermit crab" picture
1.

paguro

a crab that lives in a discarded mollusc shell to protect its soft abdomen, often changing shells as it grows

:
The child watched a hermit crab scuttle across the sand.
Il bambino guardò un paguro correre sulla sabbia.
Many species of hermit crabs are found in tropical waters.
Molte specie di paguri si trovano nelle acque tropicali.