Lion's Mane Jellyfish Info

This forum section is dedicated to the lion's mane jellyfish (Cyanea capillata)

Lion's Mane Jellyfish Info

Postby Cubic » 27 Apr 2012, 07:39

lions mane1.jpg
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Kingdom: Animalia
Phylum: Cnidaria
Class: Scyphozoa
Order: Semaeostomeae
Family: Cyaneidae
Genus: Cyanea
Species: C. capillata

Common names: Lion's Mane Jellyfish, Hair Jelly or Snotty Jelly
Scientific name: Cyanea capillata

Overview: There appear to be a number of different species that are all referred to as Cyanea capillata, we aim to give you an overview of all these species until they are further categorised.

Harmful to humans: Stings can cause breathing difficulty, muscle cramps and severe skin burning and blistering. In normal circumstances, with healthy individuals, their stings are not known to be fatal.

Maximum size: The largest recorded specimen found washed up on the shore of Massachusetts Bay in 1870. This jelly had a bell diameter of 7 feet 6 inches (2.29 m) and tentacles 120 feet (37 m) long. Most lions mane jellyfish are much smaller than this and specimens found at lower latitudes are much smaller than their far northern counterparts with bells about 50 centimetres (20 in) in diameter.

Colour: The color of the lion's mane jellyfish changes as it grows. Small jellyfish under 12cm (5 inches) in bell size are pink and yellow. Between 12cm-45cm (5-18 inches) in size, the jellyfish is reddish to yellowish-brown, and as they grow past 45cm (18 inches), they become a darker reddish brown. Like other jellyfish, they have a short lifespan, so all these color changes may happen in a period of about one year.

Life span: Around one year in the wild

Feeding: In the wild lion's mane jellyfish feed mostly on zooplankton, small fish, ctenophores and moon jellies

Photosynthetic: No

Known predators: Predators of the lion's mane jellyfish include seabirds, larger fish such as Ocean sunfish, other jellyfish species, and sea turtles

Habitat Open ocean, where they usually remain near the surface of the water, no more than 66 feet deep. Towards the end of their 1 year lifespan they can drift into shallow, sheltered bays

Distribution: Lion's Mane jellyfish are generally found in the cold waters of the Arctic, northern Atlantic, and northern Pacific Oceans. Similar jellyfish, which may be the same species, are known to inhabit seas near Australia and New Zealand.

Temperature range: 6°C-15°C

Optimum aquarium temperature: 15°C (this depends on exact species and collection area)

Salinity range: 34ppt

Other notes: These jellyfish are clearly named for their flamboyant tentacles that resemble a Lion’s Mane. In the open ocean, lion's mane jellyfish act as floating oases for certain species, such as shrimp, medusafish, butterfish, harvestfish, and juvenile prowfish, providing both a reliable source of food and protection from predators.
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