Chrysaora hysoscella (NL: Kompaskwal / EN: Compass jellyfish / DE: Kompassqualle / FR: Méduse rayonnée) is a very common species of jellyfish that lives in coastal waters of the Atlantic and Mediterranean. It has a diameter of up to 30 cm. Its 24 tentacles are arranged in eight groups of three. It is usually colored yellowish white, with some brown. It has a saucer-shaped bell, with 32 semi-circular lobes around the fringe, each one with a brown spot. On the upper surface of the bell, 16 brown V-shaped marks radiate outwards from a dark central spot. The mouth, the only opening to the exterior, is located on the centre of the underside of the bell, and is surrounded by 4 arms. The stinging cells and venom of Chrysaora hysoscella are strong and can produce painful, long lasting weals in humans. Remarkable: Chrysaora hysoscella change sex: first they are male, followed after by female !
Image: Veere (NL) – 26/07/2012
© Johan Dierckx
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