Jellyfish, anemones and corals

Jellyfish, anemones and corals

Anemones, corals, jellyfishes and hydroids are collectively known as cnidarians. They are an ancient group with a history that reaches back more than 650 million years, and with over 10,000 known species.


Bluebottles differ from true jellyfishes in several ways.

Box jellies

Cubozoans have a box-shaped bell with tentacles at each corner.