Crystal Jellyfish (Aequorea coerulescens)


Crystal jellyfish are the largest of all hydrozoan jellyfish. They give off green bio luminescent glow along their outer bell when they are disturbed. They have an almost transparent body with nearly 100 long delicate tentacles. They can swallow other jellyfish more than half their size, by expanding their mouths. They mostly feed only other hydrozoan and comb jellyfish which makes them hard to keep in captivity.
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Species Information

  • Harmful to humans: No
  • Distribution: Off east coast of China, most Japanese coastal waters
  • Maximum Bell Size: 15 cm (5 inches)
  • Life Span: up to 2 years
  • Feeding: comb jellyfish, hydrozoan jellyfish
  • Temperature: 13 – 18°C (55 – 64°F)
  • Photosynthetic: No
  • Care level: Hard

Notes: Chrystal jellyfish observed in North America (A. victoria) could be same species to this species but it is not confirmed.