Hyotissa

Hyotissa, honeycomb oysters
Three shells of Hyotissa hyotis
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Bivalvia
Order:	Ostreoida
Family:	Gryphaeidae
Genus:	Hyotissa

Hyotissa is a genus of large saltwater oysters, marine bivalve mollusks. Species in this genus are known as honeycomb oysters, or "foam oysters" because under magnification, their shell structure is foam-like.

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