The giant honeycomb oyster (Hyotissa hyotis ) is a very large saltwater oyster, a marine bivalve mollusk.
Species in this family are known as honeycomb oysters or "foam oysters" because under magnification, their shell structure is foam-like.
Like most bivalves, the giant honeycomb oyster is a filter feeder.
Its native range is in deeper water in the Indo-Pacific Ocean. It has however also been found recently as an accidentally introduced species in the Florida Keys.
![Turtle Cave, Sipadan, Sabah, MALAYSIA [Edit from marine biologist : this is rather Hyotissa hyotis]](https://s3.animalia.bio/animals/photos/medium/original/cock27s-comb-oyster-28lopha-cristagalli29-28849992046329.webp)
