Compass jellyfish (Chrysaora hysoscella)
|Researched by||Marisa Sabatini||Refereed by||Admin|
|Other common names||-||Synonyms||-|
Recorded distribution in Britain and IrelandChrysaora hysoscella occurs in coastal waters all round the British Isles. It is prevalent off the south and west coasts of England and Wales. It has been recorded off the Cumbrian coast, the Isle of Man and off the north coast of Ireland.
HabitatChrysaora hysoscella is a pelagic species. Young Chrysaora appear in British waters in May.
- Flattened umbrella or saucer shaped bell.
- Four frilly oral arms that are longer than the bell tentacles, these may also coil up at their tips.
- Upper surface of the bell has 16 v-shaped brown markings radiating from a dark apical circle or spot at the centre.
Additional informationMay be confused with the common jellyfish Aurelia aurita when stranded. Aurelia aurita however, has shorter tentacles with no brown v-shaped markings on the bell. Instead it has 4 purplish-blue horseshoe shaped gonads that are easily distinguished through the upper surface of the bell. The stinging cells and venom of Chrysaora hysoscella are strong and can produce painful, long lasting weals in humans.
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Last Updated: 08/05/2008