Sponge spicule. Coloured scanning electron micrograph (SEM) of a spicule from a sponge (order Porifera). A sponge is a primitive aquatic organism that filters food from the water. It is a loose aggregation of cells supported by its spicules,needles of a calcium or silicon-rich mineral. The cells in a sponge are not differentiated,unlike those of higher animals. Magnification: x250 at 6x7cm size | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Gschmeissner, Steve |
Taille de l’image : | 1846 px × 1252 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |