Geodia gibberosa

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Geodia gibberosa
Scientific classification
Kingdom: Animalia
Phylum: Porifera
Class: Demospongiae
Order: Astrophorida
Family: Geodiidae
Genus: Geodia
Species: G. gibberosa
Binomial name
Geodia gibberosa
Lamarck, 1815

Geodia cariboea Duchassaing & Michelotti, 1864
Geodia flexisclera Pulitzer-Finali, 1986
Geodia tumulosa Bowerbank, 1872

Geodia gibberosa (the white encrusting sponge)[1] is a Caribbean sea sponge. It is known to be eaten by hawksbill turtles.[2]


The Geodia gibberosa is a large, dense sponge. It can be white or pale tan when exposed to very little light, or dark brown in areas with a lot of it.[3] It is usually in the form of a knobby, fist-like mass, often up to 50 cm in diameter. It may also occur as a spherical mass without projections and is also known to form large colonies that resemble rounded calcareous rocks.[4] Its skeleton is a bunch of needle-like spicules radiating outward from the center near the surface, much more randomly dispersed on the inside.[3]

Geodia gibberosa is found in the Bahamas, Florida, Brazil, and west Africa.[5][3] It's commonly found in shallow waters with hard bottoms, generally in the same area as seagrasses.[3]