Lion’s mane jellyfish
Six to seven species of jellyfish live around Iceland. They are most common during late summer and autumn when most of the benthic polyps develop into the larger pelagic medusa stages. Jellyfish are the largest zooplankton and frequently reach over 1 m in diameter.
The lion´s mane jellyfish is the largest jellyfish in the world and in fact in the Guinness book of records as the longest invertebrate in the world with tentacles of up to 37 m long. This species is quite common around Iceland.