Sea squirts (Rhopalaea sp.) on a reef. Sea squirts (class Ascidiacea) are marine invertebrates which filter plankton from the water current that circulates through them. They are sedentary but have free-swimming larvae. Ascidian sea squirts are characterised by a tough outer layer of the polysaccharide tunicin, unlike other tunicates which are less rigid. Photographed in the Lembeh Strait, North Sulawesi, Indonesia. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Douwma, Georgette |
Bildgröße: | 3440 px × 5180 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |