Sponge spicules. Coloured scanning electron micrograph (SEM) of Âspicules from the sponge Tethya minuta. Sponges are primitive aquatic organisms that filter food from the water. They are a loose aggregation of cells supported by spicules and needles composed of silica. Magnification: x5000 when printed at 10 centimetres wide. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / EYE OF SCIENCE |
Taille de l’image : | 2988 px × 2988 px |
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