Gonatodes is a genus of New World dwarf geckos of the family Sphaerodactylidae.
Ophichthidae is a family of fish in the order Anguilliformes, commonly known as the snake eels. The term "Ophichthidae" comes from Greek ophis ("serpent") and ichthys ("fish"). Snake eels are also burrowing eels. They are named for their physical appearance, as they have long, cylindrical, snake-like bodies. This family is found worldwide in tropical to warm temperate waters. They inhabit a wide range of habitats, from coastal shallows and even rivers, to depths below 800 m (2,600 ft). Most species are bottom dwellers, hiding in mud or sand to capture their prey of crustaceans and small fish, but some are pelagic.
Myctophum is a genus of lanternfishes, some species of which, such as M. punctatum, are noted for having the Stylophthalmine trait in their larval form.
Ophioderma is a genus of brittle stars in the family Ophiodermatidae.
The Oreasteridae are a family of sea stars in the class Asteroidea.
Pentaceraster is a genus of sea stars in the family Oreasteridae. Members of this genus are most often observed in warm coastal waters of the Pacific and Indian Oceans.
Luidia is a genus of starfish in the family Luidiidae in which it is the only genus. Species of the family have a cosmopolitan distribution.
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.
The Heliasteridae are a family of Asteroidea in the order Forcipulatida. It includes two genera: Heliaster from the East Pacific, and Labidiaster from southernmost South America, Antarctica and subantarctic oceans.
Ophiopsila is a genus of brittle star belonging to the family Ophiocomidae. Many species are bioluminescent.
Ophiactis is a genus of brittle stars (Ophiuroidea).
Callogorgia is a genus of deep sea corals that are ideally suited to be habitats for different organisms. They reproduce both sexually and asexually, clinging to the hard substrate of the ocean during their maturation process. Callogorgia are found at depths ranging from 750-8200 feet in the Gulf of Mexico, Pacific Ocean and the Caribbean Sea. An array of organisms have relationships with Callogorgia, including brittle stars, cat sharks, and copepods. The nature of these relationships are often commensal, with Callogorgia providing a habitat for the organisms.
Astrobrachion adhaerens is a basket star in the Euryalidae family. Along with A. constrictum, it is one of only two species in the genus Astrobrachion. Both species live in association with soft corals in moderately deep water. It is endemic to the west, north and east coasts of Australia, the Kermadec Islands and Lord Howe Island.
Astrocladus is a genus of echinoderms belonging to the family Gorgonocephalidae.
Euryalidae is a family of echinoderms belonging to the order Euryalida.
Ophiomastix is a genus of echinoderms belonging to the family Ophiocomidae.
Ophiura is a genus of echinoderms belonging to the family Ophiuridae.
Comanthus is a genus of crinoid echinoderms belonging to the family Comatulidae.
Asteronyx is a genus of echinoderms belonging to the family Asteronychidae.
Ophiopsammus is a genus of brittle stars within the family Ophiodermatidae.
