It has 4 oral and long tentacles and 24 marginal ones. This leads to a decrease of jellyfish competitors, thus, their blooms are in rise. Its danger is high, similar to pink jellyfish, despite is much less frequent than this. Erythema, burn- 2. 02 October 2017/Kiel. Compass jellyfish (Chrysaora hysoscella) – this one has dark compass markings and it's sting is like that of nettles. No matter how beautiful (and innocent) jellyfish look, they can be very dangerous. Lion’s mane jellyfish (Cyanea capillata) – the second longest recorded animal in the world, it has red and orange tentacles. Like with blue jellyfish, they can at times can be found throughout the entire Celtic Sea. 5 times bell diameter, narrow, V-shaped in section, edges frilled, extreme terminal region (may be lost) spirally coiled. Also, Chrysaora hysoscella is another danger-ous jellyfish with long tentacles and isorhiza and eurytele nematocysts (Vaissiere, 1983; Gülahin, 2016). Their head markings are like a compass. Chrysaora hysoscella, compass jellyfish, are found in highest numbers off the south and west coasts. 30 cm; exumbrella smooth; tentacles 24 in adult, 3 of uniform size per octant, all arising from edge of disc in cleft between lappets.Clefts between tentacular lappets uniform in depth; length of oral arms up to ca. (Linné, 1766) Diameter up to ca. In spite of this, Chrysaora hysoscella is a really dangerous jellyfish, mainly because it has a wide wounding surface, with long tentacles and a large umbrella [65]. Journal of Plankton Research, 23:10: 1073-1080. 3. Compass jellyfish (Chrysaora hysoscella) Compass jellyfish (Chrysaora hysoscella) is an animal with flatten umbrella that can achieve 30 cm of diameter, which is reddish white and with 16 brown strips. Measure about 30cm to 50cm in diameter; Have reddish brown V shaped markings around the bell. Global climate change and the human impact on marine ecosystems result in decreasing the number of fish in the ocean. The recent bloom of a giant jellyfish Nemopilema nomurai has caused a danger to sea bathers and fishery damages in the waters of China, Korea, and Japan. Risk factor: Painful Sting 3. Compass Jellyfish (Chrysaora hysoscella) They are yellowy white colour and can be found from July to September. Have 24 long dangling tentacle and four frilly mouth arms. Read below about which jellyfish to watch out for, what the dangers are and where you can encounter certain species. Biometry and size distribution of Chrysaora hysoscella (Cnidaria, Scyphozoa) and Aequorea aequorea (Cnidaria, Hydrozoa) off Namibia with some notes on their parasite Hyperia medusaru. Read below about which jellyfish to watch out for, what the dangers are and where you can encounter certain species. Compass jellyfish (Chrysaora hysoscella) – this one has dark compass markings and it's sting is like that of nettles. 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