Eyster

Eyster is whit monie unalike groups o bivalve mollusks are cried, maist o which bide in ocean airt or sautie watter. The huil is makkit o twa unco calcified valves what surroond a swack corp. Gills syle plankton fae the watter, an strang adductor muscles are uised tae claucht the huil closed.

Oysters
Paceefic eyster frae the Marennes-Oléron basin in Fraunce
Scienteefic clessification
Kinrick:	Animalia
Phylum:	Mollusca
Cless:	Bivalvia
Subcless:	Pteriomorphia
Groups included
Anomiidae – saidle eysters Dimyidae – dimyarian eysters Ostreidae – true eysters Placunidae – windaepane eysters Pteriidae – feather eysters Spondylidae – spiny eysters
Cladeestically includit but tradeetionally excludit taxa
Aw ither members o: Anomioidea Ostreida Ostreoidea Pectinida Pectinoidea Pterioidea

Some kynds o eysters are unco prized as fuid, baith raw an ceukit. Ither kynds, sic as pairl eysters, are no eten for ordinar.

Real eysters, belongin tae the faimlie Ostreidae, are downa o makkin gem-quality pairls, altho the opposite thocht is a commonly-encounterit misapprehension, aften keekit in picturs or photographs whar an etible eyster huil is paired wi a gem-quality pairl.