Sealife guideThe Sea urchins classThe taxonomy of marine species
Explore the taxonomy of marine echinoderms with a dedicated focus on starfish and sea urchins !
The class Echinoidea, commonly known as sea urchins, are marine animals characterized by a spherical or slightly flattened body, often protected by rigid spines. These animals, usually small in size, move slowly along the seafloor using tube feet and their internal skeleton is made up of fused calcareous plates.
Black sea urchin
(Arbacia lixula)
(Arbacia lixula)
Slate pencil urchin
(Heterocentrotus mamillatus)
(Heterocentrotus mamillatus)
Stony sea urchin
(Paracentrotus lividus)
(Paracentrotus lividus)
Red sea urchin
(Mesocentrotus franciscanus)
(Mesocentrotus franciscanus)
Violet sea urchin
(Sphaerechinus granularis)
(Sphaerechinus granularis)
West Indian sea egg
(Tripneustes ventricosus)
(Tripneustes ventricosus)
Hatpin sea urchin
(Centrostephanus longispinus)
(Centrostephanus longispinus)
Long-spined sea urchin
(Diadema antillarum)
(Diadema antillarum)
Red Sea fire sea urchin
(Asthenosoma marisrubri)
(Asthenosoma marisrubri)
Common heart urchin
(Echinocardium cordatum)
(Echinocardium cordatum)
Heart urchin
(Maretia planulata)
(Maretia planulata)
Our latestUpdates
Milos IslandDiscover Milos Island in the Cyclades, known for its volcanic landscapes, crystal-clear beaches, traditional villages, and the famous Venus de Milo.Read more
The basking sharkDiscover the basking shark (Cetorhinus maximus), the world's second-largest fish. This huge shark feeds on plankton by filtering large amounts of water.Read more
The Banggai cardinalfishDiscover the Banggai cardinalfish (Pterapogon kauderni), a small marine fish endemic to the Banggai Islands, known for its black-and-white stripes and unique reproductive behavior.Read more
Photo of the Day
Poisson chauve-souris à pois
(Ogcocephalus radiatus)
(Ogcocephalus radiatus)
Copyright © 2007-2026 auxBulles.com - All rights reserved. Legal notices.Photo credits - Our partners