Water bear. Coloured scanning electron micrograph (SEM) of a freshwater water bear (Echiniscus sp.). Water bears,or tardigrades,are tiny invertebrates that live in coastal waters and freshwater habitats,as well as semi-aquatic terrestrial habitats like damp moss. They require water to obtain oxygen by gas exchange. In dry conditions,they can enter a cryptobiotic tun (or barrel) state of dessication to survive. Water bears feed on plant and animal cells and are found throughout the world,from the tropics to the cold polar waters | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Gschmeissner, Steve |
Taille de l’image : | 3065 px × 2853 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |