Grey bonnet

Phalium glaucum

''Phalium glaucum'', common name the grey bonnet or glaucus bonnet, is a species of large sea snail, a marine gastropod mollusk in the family Cassidae, the helmet snails and bonnet snails.
Grey Bonnet (Phalium glaucum) Air Bajo 2, Lembeh.
https://www.jungledragon.com/image/68538/grey_bonnet_phalium_glaucum.html Geotagged,Grey bonnet,Indonesia,Phalium glaucum,Spring

Appearance

Shell of ''Phalium glaucum'' can reach a length of 60–147 millimetres .

These shells are helmet shaped with a large body whorl and tiny spires. The surface of shell is smooth and uniformly greyish or pale brown. The molluscs have a white body and a large yellowish or whitish foot which is edged in reddish brown. The operculum is bright yellow and fan-shaped. Usually this sea snail buries itself in the sandy areas with the long siphon sticking out.
Grey Bonnet (Phalium glaucum) Air Bajo 2, Lembeh. Geotagged,Grey bonnet,Indonesia,Phalium glaucum,Spring

Distribution

This species is widespread in the Indo-Pacific, from Eastern Africa to Southern Japan and Melanesia.
Grey Bonnet Snail -  Phalium glaucum  Anilao,Batangas,Geotagged,Grey Bonnet Snail,Phalium glaucum,Philippines,Shellfish,Snail

Habitat

This species lives on sandy bottoms with seagrass meadows, in intertidal and shallow subtidal areas to a depth of about 10 m.

References:

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Taxonomy
KingdomAnimalia
DivisionMollusca
ClassGastropoda
OrderLittorinimorpha
FamilyCassidae
GenusPhalium
SpeciesP. glaucum