hermit crab
US /ˈhɜːr.mɪt ˌkræb/
UK /ˈhɜːr.mɪt ˌkræb/

1.
рак-отшельник
a crab that lives in a discarded mollusc shell to protect its soft abdomen, often changing shells as it grows
:
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The child watched a hermit crab scuttle across the sand.
Ребенок наблюдал, как рак-отшельник ползет по песку.
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Many species of hermit crabs are found in tropical waters.
Многие виды раков-отшельников встречаются в тропических водах.