Light micrograph of sponge spicules

Light micrograph of sponge spicules

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Credit: SCIENCE PICTURES LTD/SCIENCE PHOTO LIBRARY

Caption: Sponge spicules. Light micrograph of the spicules from unidentified marine sponges (Porifera). Sponges are primitive multicellular animals. Spicules are the intricate skeletal structures that support the body structure of a sponge. They are made of silica or calcium. The shape of the spicules is often specific to the species of sponge, and can be used as an identification tool. Magnification: x160 at 35mm size.

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Keywords: animal, invertebrate, invertebrates, nature, porifera, poriferan, spicule, spicules, sponge, wildlife, zoology

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