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Blue Jellyfish

Cyanea lamarckii Péron & Lesueur 1810

Brief Summary

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The blue jellyfish is a flat average-sized jellyfish. The jellyfish can sting severely with its long hairy tentacles located on the rim of the bell. Blue jellyfish are often found close to the shore with easterly winds. During the summer, they can spoil a warm beach day for bathing guests. Beach pavilion owners seem to easily forget previous jellyfish invasions. Every times there's an invasion, you always hear that "it has never been this bad".
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Blue jellyfish

provided by wikipedia EN

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Blue jellyfish, expanding
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Blue jellyfish, underside

Cyanea lamarckii, also known as the blue jellyfish or bluefire jellyfish, is a species of jellyfish in the family Cyaneidae.

Distribution

This species is found in the pelagic zone off the west coast of Scotland, the North Sea, the English Channel, and the Irish Sea, sometimes with the more common lion's mane jellyfish, (Cyanea capillata).[1]

Description

C. lamarckii has a blue or yellow tone and grows to approximately 10 to 20 cm (3.9 to 7.8 in.) across, but specimens can grow to 30 cm (11.8 in.).[2] In Scandinavian seas this species rarely grows larger than 15 cm (5.9 in.).

This jellyfish has many stinging tentacles. The four mouth arms are large with many wrinkles and ripples.[3] The jellyfish live off a diet of phytoplankton or zooplankton as well as the eggs and larvae of other aquatic animals such as fish. [4]

Taxonomy

The taxonomy of Cyanea species is not fully agreed upon. Some zoologists have suggested that all species within the genus should be treated as one. However, Cyanea lamarckii exists with two other distinct taxa in at least the eastern North Atlantic.

The species specifier originates from the French naturalist Lamarck (Latin name form: Lamarckius).

Life cycle

The medusae bud and loosen from the mature polyps between January and March around the British Isles and southern North Sea. This occurs in a similar way to the life cycle of the moon jellyfish.

References

  1. ^ Andy Horton. "British Jellyfish". Glaucus.org.uk. Retrieved 2010-07-30.
  2. ^ "Blue jellyfish (Cyanea lamarckii):: OS grid SN6090 :: Geograph Britain and Ireland - photograph every grid square!". Geograph.org.uk. Retrieved 2010-07-30.
  3. ^ "Aquascope|Facts|Blå brännmanet". Vattenkikaren.gu.se. Retrieved 2010-07-30.
  4. ^ "Fun Facts about Jellyfish | JellyWatch". jellywatch.org. Retrieved 2019-04-01.
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Blue jellyfish: Brief Summary

provided by wikipedia EN
 src= Blue jellyfish, expanding  src= Blue jellyfish, underside

Cyanea lamarckii, also known as the blue jellyfish or bluefire jellyfish, is a species of jellyfish in the family Cyaneidae.

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Wikipedia authors and editors
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Habitat

provided by World Register of Marine Species
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bibliographic citation
van der Land, J. (ed). (2008). UNESCO-IOC Register of Marine Organisms (URMO).
contributor
Jacob van der Land [email]