Box jellyfish nematocyst (Carybdea alata), SEM

Numéro d’image : 12301361
Box jellyfish nematocyst (Carybdea alata), SEM
Coloured scanning electron micrograph (SEM) of Released nematocysts (ejected tubules) from the tentacle of a box jellyfish (Carybdea alata). This box jellyfish belongs to the Cubozoa group of Cnidarians. The larval stage of Cnidarians is called the planula and it is a free swimming developmental stage. Cubozoan planulae are pear-shaped, have pigment spots that may be sensitive to light, and swim for a few days using cilia. After a planula settles, it grows into a polyp. The cubozoan polyp can crawl around and bud off more polyps. Like all cnidarians, cubozoans possess nematocysts, cells that fire a barb and transfer venom. When a nematocyst contacts something that might be prey or predator, the barb uncoils and fires from the capsule along with toxic venom. Magnification x140 when shortest axis printed at 25 millimetres.
Licence : Droits gérés
Crédit: Science Photo Library / DENNIS KUNKEL MICROSCOPY
Taille de l’image : 3302 px × 2646 px
Model Release : Non requis
Property Release : Non requis
Restrictions : -

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