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sponge click to hear : sponge

Porous multicell organism, mostly marine (currently about 5,000 species); it anchors itself to a support and filters water to take in food particles.
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See sponge in : french | spanish
anatomy of a sponge pinacocyte spongocoel mesohyl endoderm ectoderm incurrent pore osculum water flow choanocyte calcareous sponge

anatomy of a sponge click to hear : anatomy of a sponge

pinacocyte click to hear : pinacocyte

Flat ectodermal cell forming the outer covering of the sponge.

spongocoel click to hear : spongocoel

Hollow portion of the sponge covered with choanocytes, in which water circulates before exiting through the osculum.

mesohyl click to hear : mesohyl

Gelatinous substance, rich in water, located between the ectoderm and the endoderm.

endoderm click to hear : endoderm

Inner layer of the sponge formed of cells (choanocytes) whose role is mainly to feed the organism.

ectoderm click to hear : ectoderm

Outer layer of the sponge formed of cells (pinacocytes) whose role is mainly to protect the organism.

incurrent pore click to hear : incurrent pore

Opening into the gastric cavity, through which water enters the sponge.

osculum click to hear : osculum

Large opening protected by spicules, through which the sponge discharges water from the gastric cavity.

water flow click to hear : water flow

Choanocyte flagella allow water to move inside the sponge, carrying oxygen and food particles to it.

choanocyte click to hear : choanocyte

Inner cell having a filament (flagellum), which allows water to circulate and food particles to be caught and digested.

calcareous sponge click to hear : calcareous sponge

Marine sponge with a skeleton composed of small calcareous needles (spicules).