Sealife guideThe Rhizostomeae orderThe taxonomy of marine species

Explore the taxonomy of cnidarians and especially sea anemones, corals and jellyfish !
Blue blubber jellyfish (Catostylus mosaicus)
Blue blubber jellyfish
(Catostylus mosaicus)
Fried egg jellyfish (Cotylorhiza tuberculata)
Fried egg jellyfish
(Cotylorhiza tuberculata)
White spotted jellyfish (Phyllorhiza punctata)
White spotted jellyfish
(Phyllorhiza punctata)
Barrel jellyfish (Rhizostoma pulmo)
Barrel jellyfish
(Rhizostoma pulmo)

Our latestUpdates

The queen triggerfish
Tuesday, September 16th 2025
The queen triggerfish
Discover the queen triggerfish (Balistes vetula), a colorful Atlantic reef fish known for its strong jaws, unique feeding techniques and fascinating reproductive habits.
The bump-head sunfish
Friday, September 5th 2025
The bump-head sunfish
Learn about the bump-head sunfish (Mola alexandrini), the world's heaviest bony fish, its habitat in tropical and temperate oceans, diet of jellyfish, deep-water behavior and record size over 6,000 lbs.
The chocolate chip sea cucumber
Wednesday, September 3rd 2025
The chocolate chip sea cucumber
The chocolate chip sea cucumber has a massive cylindrical body that is beige in color, covered with a set of dark brown pustules resembling chocolate chips that protrude slightly from the surface, giving it a resemblance to a cookie, hence its french name. It can reach a length of about 12 inches when fully grown.
Photo of the Day
Poisson perroquet royal (Scarus vetula)
Poisson perroquet royal
(Scarus vetula)