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Sterechinus neumayer [1] Sterechinus neumayeri, the Antarctic sea urchin, is a species of sea urchin in the family Echinidae. It is found living on the seabed in the waters around Antarctica. It has been used as a model organism in the fields of reproductive biology, embryology, ecology, physiology and toxicology. [2]
Abatus agassizii. ( Pfeffer, 1889) Abatus agassizii is a species of sea urchin of the family Schizasteridae. Their armour is covered with spines. It is in the genus Abatus and lives in the sea. Abatus agassizii was first scientifically described in 1889 by Georg Pfeffer. [1] The Abatus agassizii is an irregular sea urchin species. Its habitat ...
Sea urchins or urchins (/ ˈ ɜːr tʃ ɪ n z /) are typically spiny, globular animals, echinoderms in the class Echinoidea. About 950 species live on the seabed, inhabiting all oceans and depth zones from the intertidal to 5,000 metres (16,000 ft; 2,700 fathoms). [1]
Strongylocentrotus droebachiensis is commonly known as the green sea urchin because of its characteristic green color, not to be confused with Psammechinus miliaris as it is also commonly called the green sea urchin. It is commonly found in northern waters all around the world including both the Pacific and Atlantic Oceans to a northerly ...
Aporocidaris antarctica is a species of sea urchin of the family Ctenocidaridae. Their armour is covered with spines. It is placed in the genus Aporocidaris and lives in the sea. Aporocidaris antarctica was first scientifically described in 1909 by Ole Theodor Jensen Mortensen, Danish professor. It has a circum-Antarctic distribution.
This species is a large sea urchin, with some specimens reaching over 8 cm in diameter, with spikes up to 10 cm. Most specimens are bright red, but brown and purple colorations are also seen. [3] The spines may have a different color from the body. Spines have a white ring at their stem and have alternating light and dark rings.
Pseudocentrotus depressus, commonly known as the pink sea urchin, [2] is a species of sea urchin, one of only two species in the genus Pseudocentrotus.It was first described in 1864 by the American marine zoologist Alexander Agassiz as Toxocidaris depressus, having been collected during the North Pacific Exploring and Surveying Expedition undertaken by Captain Cadwalader Ringgold and later ...
The red Antarctic sea urchin (Sterechinus neumayeri) has been used in several studies and has become a model organism. [51] This is by far the best-known sea urchin of the region, but not the only species. Among others, the Southern Ocean is also home to the genus Abatus that burrow through the sediment eating the nutrients they find in it. [6]