Holothuria is the type genus of the marine animal family Holothuriidae, part of the class Holothuroidea, commonly known as sea cucumbers. Members of the genus are found in coastal waters in tropical and temperate regions. They are soft bodied, limbless invertebrates that dwell on the ocean floor and are usually detritivore. They resemble a cucumber in form. The genus contains some species that are harvested and sold as food.
The Majoidea are a superfamily of crabs which includes the various spider crabs.
Hemifusus is a genus of sea snails, marine gastropod molluscs in the family Melongenidae, the crown conches and their allies.
Prosipho is a genus of sea snails, marine gastropod mollusks in the family Buccinidae, the true whelks.
Nipponotrophon is a genus of sea snails, marine gastropod mollusks in the family Muricidae, the murex snails or rock snails.
Pterynotus is a genus of sea snails, marine gastropod mollusks in the family Muricidae, the murex snails or rock snails.
Ceratoxancus is a genus of sea snails, marine gastropod mollusks in the family Costellariidae.
Henricia is a large genus of slender-armed sea stars belonging to the family Echinasteridae. It contains about fifty species.
Echinidae is a family of sea urchins in the order Echinoida. Members of the family are found in the Atlantic Ocean and the Antarctic.
Odontaster validus is a species of sea star in the family Odontasteridae. Its range includes the Southern Ocean and the seas around the mainland and islands of Antarctica.
Acodontaster conspicuus is a species of starfish in the family Odontasteridae. It is found in the Southern Ocean, in the waters off Antarctica and the island groups nearby.
Abatus elongatus is a species of sea urchin of the family Schizasteridae. Their armour is covered with spines. It came from the genus Abatus and lives in the sea. Abatus elongatus was first scientifically described in 1836 by Koehler.
Abatus ingens is a species of sea urchin of the family Schizasteridae. Their armour is covered with spines. It came from the genus Abatus and lives in the sea. Abatus ingens was first scientifically described in 1926 by Koehler.
Abatus philippii is a species of sea urchin of the family Schizasteridae. Their armour is covered with spines. It came from the genus Abatus and lives in the oceans of the southern hemisphere. Abatus philippii was first scientifically described in 1871 by Sven Lovén.
Thyca stellasteris is a species of sea snail, a marine gastropod mollusk in the family Eulimidae. The species is one of a number within the genus Thyca.
Circeaster is a genus of abyssal sea stars in the family Goniasteridae.
Notoscopelus elongatus is a species of lanternfish in the family Myctophidae. It is endemic to the Mediterranean Sea where it is found in deep water habitats, rising to near the surface to feed at night and descending to great depths by day. It is a common species with no particular threats, and the International Union for Conservation of Nature has listed its conservation status as being of least concern.
Notoscopelus kroyeri, commonly known as the lancet fish, is a species of lanternfish in the family Myctophidae. It is endemic to the North Atlantic Ocean where it is found in deep water habitats, spending its day at great depths and its night near the surface. It was previously regarded by some authorities as being a subspecies of Notoscopelus elongatus; one of the differences between the two being that N. elongatus has 25 or fewer gill rakers while N. kroyeri has 26 or more.
Diplasterias brucei is a species of starfish in the family Asteriidae. It is found in the Pacific Ocean and Southern Ocean. It is a predator and scavenger and is unusual among starfish in that it broods its young.
Pourtalesia is a genus of the family Pourtalesiidae which belongs to the irregular sea urchins. The animals measure 5–6 cm in length and live in the abyssal zone of the Atlantic, Pacific, Indopacific and Antarctic Oceans where they have been found in more than 3,000 m depth. The mouth opening of these animals is located anteriorly and the lantern of Aristotle is missing as typically for holasteroid sea urchins.
