Georgette Douwma / RF - Blue knee hermit crab (Dardanus guttatus) looking out from its shell, Malapascua Island, Philippines. (This image may be licensed either as rights managed or royalty free.)
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GEORGETTE DOUWMA / Blue-knee hermit crab (Dardanus guttatus) Misool, Raja Ampat, West Papua, Indonesia.
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Gary Bell/ Oceanwide / Hermit Crab (Dardanus guttatus), Bali, Indonesia
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David Fleetham / Blue knee hermit crab (Dardanus guttatus) prefers shells with narrow openings such as this cone shell, Yap, Micronesia.