Box Jellyfish Larva Stage (carybdea Alata) #3
by Science Photo Library
Title
Box Jellyfish Larva Stage (carybdea Alata) #3
Artist
Science Photo Library
Medium
Photograph - Photograph
Description
Scanning electron micrograph (SEM) of Larva stage (planula) 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 x200 when shortest axis printed at 25 millimetres.
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October 4th, 2018
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