glass sponge


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glass sponge

[′glas ‚spənj]
(invertebrate zoology)
A siliceous sponge belonging to the class Hyalospongiae.
References in periodicals archive ?
Caption: Glass sponges, which provide habitat for feather and brittle stars in frigid Antarctic waters, flourished following the collapse of the Larsen A ice shelf.
Basket sponges, Geodia, and glass sponges comprised 66.
Only the basket sponges appeared to be affected; Geodia and glass sponges showed no evidence of necrosis.
Konecki and Targett (1989) note that glass sponges serve as important nesting and refuge sites for Antarctic fishes, and destruction of sponge communities by bottom trawling could have an impact on fish ecology in the region.
In addition, five glass sponges, Rhabdocalyptus sp.
Glass sponges are so called because their skeletons are built from glasslike silica minerals, not carbonates.
Such reef-building glass sponges disappeared from the fossil record about 120 million years ago, about the same time that diatoms, a type of single-celled marine algae with cell walls built of silica, first appeared in large numbers, says Johnson.