SCUBA TravelClownfish: SCUBA Travel logo

SCUBA Travel Home

Diving Board

British Photo Gallery

Diving the Isle of Man

Underwater Photo Gallery 1

Australian Photo Gallery

British Isles Photo Gallery

Red Sea Coral Photo Gallery

Red Sea Photo Gallery

Maldives Photo Gallery

Philippines Photo Gallery

Mediterranean Photo Gallery

Wreck Diving Photo Gallery

Thistlegorm Photo Gallery

Umbria Photo Gallery

Rosalie Moeller Photo Gallery

Dolphin Photo Gallery

Cave Diving Photo Gallery

Diving Destinations

Diving Books

Diving Insurance

Save 5% on Scuba Travel Insurance
5% off annual policy with code TAGAM5, or 2% off a single trip with code TAGST2

Confirm email

Visit SCUBA Travel's profile on Pinterest.



Lion's Mane jellyfish

Photo copyright Tim Nicholson, whose underwater photographs and photo books are available from
Lion's Mane Jellyfish, Cyanea capillata

With tentacles up to three metres long and covered with stinging cells, it's better not to get too close to the Lion's Mane jellyfish. It's body can be up to 200 cm across making it one of the largest species of jellyfish.

The tentacles are arranged in eight bunches, with each bunch containing over 100 tentacles. The oldest tentacles are often coloured dark red. They have a very severe sting that can produce blisters, irritation, and muscular cramp and may even affect respiratory and heart function. Fragments of tentacles, left on buoy ropes for example, retain their stinging power.

This species does occasionally occur in large swarms, largely thought to be due to storms and tides that concentrate individuals together. They are predators, eating zooplankton, small fish and moon jellyfish.

You'll find the Lion's Mane in the cold Arctic and Pacific Oceans, the North and Irish Seas and around the coast of Australia. They are mostly no deeper than around 20 metres.

Back to the British Isles Underwater Photo Gallery... or more lionsmane photos.

Further Reading
Dive sites and marine life of the Calf of Man and neighbouring area by Bill Sanderson, Bruce McGregor and Andrew Brierley, Immel Publishing Ltd, 1994, Paperback.
Great British Marine Animals, by Paul Naylor, Deltor (2005)
The Underwater Photographer: Digital and Traditional Techniques, by by Martin Edge, Paperback, 536 pages (2009)