Echinoderm families

The Asteriidae are a diverse family of Asteroidea (sea stars) in the order Forcipulatida. It is one of three families in the order Forcipulatida.

The Asterinidae are a large family of sea stars in the order Valvatida.

The Solasteridae are a family of sea stars.

The Ophidiasteridae (Greek ophidia, Οφιδια, "of snakes", diminutive form) are a family of sea stars with about 30 genera. Occurring both in the Indo-Pacific and Atlantic Oceans, ophidiasterids are greatest in diversity in the Indo-Pacific. Many of the genera in this family exhibit brilliant colors and patterns, which sometimes can be attributed to aposematism and crypsis to protect themselves from predators. Some ophidiasterids possess remarkable powers of regeneration, enabling them to either reproduce asexually or to survive serious damage made by predators or forces of nature (an example fo

The Oreasteridae are a family of sea stars in the class Asteroidea.

Gorgonocephalidae is a family of basket stars. They have characteristic many-branched arms. thumb|Arms of Astroboa nuda

Goniasteridae (the biscuit stars) constitute the largest family of sea stars, included in the order Valvatida. They are mostly deep-dwelling species, but the family also include several colorful shallow tropical species.

Holothuriidae is a family of sea cucumbers, a type of echinoderm.

Ophiuridae are a large family of brittle stars of the suborder Ophiurina.

The Echinometridae are a family of sea urchins in the class Echinoidea.

Synaptidae is a family of sea cucumbers that have no tube feet, tentacle ampullae, retractor muscles, respiratory trees, or cuvierian tubules. They also lack radial canals of the water-vascular system, with only the circumoral ring present.

The Astropectinidae are a family of sea stars in the order Paxillosida. Usually, these starfish live on the seabed and immerse themselves in soft sediment such as sand and mud.

The Strongylocentrotidae are a family of sea urchins in the order Camarodonta.

Cidaridae is a family of sea urchins in the order Cidaroida.

The Echinasteridae are a family of starfish in the monotypic order Spinulosida. The family includes eight genera and about 133 species found on the seabed in various habitats around the world.

Echinidae is a family of sea urchins in the order Camarodonta. Members of the family are found in the Atlantic Ocean and the Antarctic.

The Stichopodidae are a family of sea cucumbers, part of the order Synallactida.

Amphiuridae (commonly called long-armed burrowing brittle stars or burrowing brittle stars) are a large family of brittle stars of the suborder Gnathophiurina. Some species are used to study echinoderm development (e.g. Amphipholis kochii and Amphioplus abditus) and bioluminescence (the dwarf brittle star, Amphipholis squamata).

Toxopneustidae is a family of globular sea urchins in the class Echinoidea.

Antedonidae is a family of crinoids or feather stars in the phylum Echinodermata. Members of the family are unstalked and have ten feathery arms. They can move about freely and have clawed cirri to attach them temporarily to structures.

The Echinothuriidae are a family of sea urchins in the order Echinothurioida. These echinoderms are typical of the Indo-Pacific these softer-bodied "leather urchins" are found from abyssal to shallow littoral zones in the ocean. While common in the Indo-Pacific these colourful urchins can be found across the world. Some individuals within Echinothuriidae such as species in the genus Asthenosoma are also known as "fire urchins" due to their bright colours and painful, venomous sting.

Euryalidae is a family of echinoderms belonging to the order Euryalida.

Cucumariidae is a family of sea cucumbers, marine animals with elongated bodies, leathery skins and tentacles that are found on the sea bed.

The Porcellanasteridae are a family of sea stars in the order Paxillosida. These sea stars are found at abyssal depths. The World Asteroidea Database includes these genera in this family: Abyssaster Madsen, 1961 Benthogenia Fisher, 1911 Damnaster H.E.S. Clark & McKnight, 1994 Eremicaster Fisher, 1905 Hyphalaster Sladen, 1883 Lethmaster Belyaev, 1969 Lysaster Bell, 1909 Porcellanaster Wyville Thomson, 1877 Sidonaster Koehler, 1909 Styracaster Sladen, 1883 Thoracaster Sladen, 1883 Vitjazaster Belyaev, 1969

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Asteropseidae is a family of sea stars. Members of the family have relatively broad discs and five short tapering arms.

The Brisingidae are a family of starfish found only in the deep sea. They inhabit both the Atlantic and Pacific Oceans at abyssal depths, and also occur in the Southern Ocean and around Antarctica at slightly shallower depths.

Myriotrochidae is a family of sea cucumbers.

The Zoroasteridae are one of three families of Asteroidea (sea stars) in the order Forcipulatida. It contains seven living genera and one extinct genus.

Asteronychidae is a family of echinoderms belonging to the order Euryalida.

Brissidae is a family of echinoderms belonging to the order Spatangoida.

Laetmogonidae is a family of sea cucumbers.

Ophiotrichidae are a family of brittle stars within the suborder Gnathophiurina.

Ophiocomidae are a family of brittle stars of the suborder Ophiurina.

Pedicellasteridae is a family of echinoderms belonging to the order Forcipulatida.

Elpidiidae is a family of deep-sea sea cucumbers.

The Freyellidae are a family of deep-sea-dwelling starfish. It is one of two families in the order Brisingida. The majority of species in this family are found in Antarctic waters and near Australia. Other species have been found near New Zealand and the United States.

Loveniidae is a family of heart urchins in the order Spatangoida.

Benthopectinidae is a family of sea stars containing at least 75 species in eight genera. It is the only family in the monotypic order Notomyotida.

Sclerodactylidae is a family of sea cucumbers, marine invertebrates with elongated bodies, leathery skins and tentacles.

Chiridotidae is a family of sea cucumbers found in the order Apodida. Within the family, there are 16 recognized genera all with different ranges of body types and functions. Sea cucumbers play a fundamental role in many marine ecosystems.

Saleniidae is a family of echinoderms belonging to the order Salenioida. It was first identified by Louis Agassiz in 1838.

Hemiasteridae is a family of echinoderms belonging to the order Spatangoida.

Ophiodermatidae are a family of brittle stars in the order Ophiacanthida.

Mellitidae is a family of sand dollars, in the echinoderm order Clypeasteroida. These irregular sea urchins bury themselves in soft sediment in shallow seas.

The Heliasteridae are a family of Asteroidea (sea stars) in the order Forcipulatida. It includes two genera: Heliaster from the East Pacific (California to Chile, including offshore islands), and Labidiaster from southernmost South America, Antarctica and subantarctic oceans.

Ypsilothuriidae is a family of sea cucumbers belonging to the order Dendrochirotida.

The Spatangidae are a family of heart urchins. There are three recognised genera within the family; Granopatagus, Plethotaenia, and Spatangus. Additionally, Prospatangus was previously a recognised genus within the Spatangidae, but is now accepted as part of the genus Spatangus.

Phyllophoridae is a family of sea cucumbers, marine invertebrates with elongated bodies, leathery skins and feeding tentacles.

Psolidae is a family of sea cucumbers, marine animals with elongated bodies, leathery skins and tentacles that are found on the sea bed.

Thalassometridae is a family of echinoderms belonging to the order Comatulida.

Temnopleuridae is a family of sea urchins in the infraorder Temnopleuridea.

Pseudarchasteridae is a family of echinoderms belonging to the order Paxillosida.

Ophiomyxidae is a family of echinoderms belonging to the order Ophiacanthida.

Mariametridae is a family of echinoderms belonging to the order Comatulida.

Clypeasteridae is a family of sea urchins in the order Clypeasteroida. This family was first scientifically described in 1835 by the Swiss-American biologist Louis Agassiz.

Pelagothuriidae is a family of deep-sea swimming Sea cucumber. Members of this family are morphologically distinct from other sea cucumbers, possessing numerous appendages such as conical papillae and leaf-like tentacles. Most members of the order inhabit deep-sea environments, including species such as Enypniastes, and are benthopelagic, living in the water column just above the sea floor.

Ophionereididae are a family of brittle stars.

The Synallactidae are a family of sea cucumbers, part of the order Synallactida.

Rhopalodinidae is a family of sea cucumbers belonging to the order Dendrochirotida.