Blue Jellyfish (Cyanea lamarckii)

Overview

Blue jellyfish or blue fire jellyfish is found in the pelagic zone off the west coast of Scotland, the North Sea and the Irish Sea. Their distribution overlaps with their kin, Lion’s mane jellyfish (Cyanea capilata).  Bell colours of blue jellyfish are blue or violet where Lion’s mane jellyfish has more orange to brownish on their bells. You can almost say they are blue version of Lion’s mane jellyfish but blue jellyfish do not grow as large as Linon’s mane jellyfish. 
Blue jellyfish Cyanea lamarckii
Blue jellyfish Cyanea lamarckii
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Species Information

  • Harmful to humans: Partially – Stings from captive bred species are usually undetectable, however may cause irritation to those with sensitive skin
  • Distribution: West of Scotland, the Irish Sea, the North Sea
  • Maximum Bell Size: 30 cm (11.8 inches)
  • Life Span:  1 year 
  • Feeding: Small plankton, small mysid, shrimp and fish, other jellyfish
  • Temperature: 13 – 18°C (55 – 65°F)
  • Photosynthetic: No
  • Care level: Difficult