A booby is a seabird in the genus Sula, part of the family Sulidae. Boobies are closely related to the gannets (Morus), which were formerly included in Sula.
Perrin's cave beetle, Siettitia balsetensis, is an extinct freshwater beetle from France. It and Siettitia ayenionensis are the only two species in the genus Siettitia.
The northern cave bat is a vesper bat that occurs throughout most of Australia.
The waterfall climbing cave fish, also known as the cave angel fish, is a species of troglobitic hillstream loach endemic to Thailand. It reaches a length of 2.8 centimetres (1.1 in) SL. This fish is known for its fins, which can grapple onto terrain, and its ability to climb. This fish is the only known member of its genus.
Garra typhlops, also known as the Iran cave barb is a species of ray-finned fish in the family Cyprinidae. It is endemic to caves in Iran. Like other cave-adapted fish, it is blind and lacks pigmentation.
Eidinemacheilus smithi, also known as the Zagroz blind loach, is a species of loach in the family Nemacheilidae. This cavefish is endemic to an aquifer in the Karun River drainage in the Zagros Mountains of Iran.
Typhlogarra widdowsoni or Garra widdowsoni, the Iraq blind barb or Haditha cave garra, is a species of cyprinid fish endemic to underground water systems near Haditha in Iraq. Although traditionally placed in its own genus Typhlogarra, this is not supported by genetic evidence, leading to its move to Garra. This cavefish is considered critically endangered because of water extraction, which has lowered the groundwater level. Once abundant, a survey in 2012 found that it now was very rare. Another species from the same place, Caecocypris basimi, may already be extinct. The only other known cavefish in Iraq is Eidinemacheilus proudlovei.
Oscaecilia zweifeli is a species of caecilian in the family Caeciliidae. It is a poorly known species only known from few specimens: the holotype from the imprecise type locality, "a small creek tributary to Río Mazaruni" in Guyana, one from similarly imprecise Cayenne in French Guiana, and another one from the Nouragues research station in French Guiana. The specific name zweifeli honors Richard G. Zweifel, an American herpetologist. Common names Zweifel's caecilian and tributary caecilian have been coined for it.
The Georgia blind salamander is a species of salamander in the family Plethodontidae. It is endemic to the south-eastern United States where its natural habitats are inland karsts, caves and subterranean habitats. It is listed as "Endangered" by the IUCN and is threatened by habitat loss.
The halcyon horseshoe bat is a species of bat in the family Rhinolophidae. It is found in Cameroon, Republic of the Congo, Democratic Republic of the Congo, Ivory Coast, Equatorial Guinea, Ghana, Guinea, Kenya, Liberia, Nigeria, Senegal, South Sudan, Togo, Uganda, possibly Gabon, and possibly Sierra Leone. Its natural habitats are subtropical and tropical dry and moist lowland forest, moist savanna, caves, and other subterranean habitats.
Stygichthys typhlops, the blind tetra or Brazilian blind characid, is a species of fish in the family Characidae and the only member of the genus Stygichthys. It is endemic to caves in northern Minas Gerais, Brazil. Like other cave-adapted fish, the Brazilian blind characid is blind and lacks pigmentation. It reaches up to about 4.6 cm (1.8 in) in standard length. It is solitary and when kept together in an aquarium, individuals are indifferent to each other.
Antrorbis breweri, common name Manitou cavesnail, is a species of freshwater snail with gills and an operculum, an aquatic gastropod mollusk in the family Lithoglyphidae.
Allocrangonyx is a genus of troglobitic amphipod crustaceans from the South Central United States. The two species are both listed as vulnerable on the IUCN Red List. The animals are blind and unpigmented. During the male's development, the outer ramus of the third uropod differentiates into secondary segments and grows to a length greater than the animal's body length.
Mexistenasellus is a genus of isopod crustaceans in the family Stenasellidae.
Typhlatya is a genus of shrimp in the family Atyidae. These are small, stygobitic shrimp found in the West Mediterranean region, Caribbean region, Ascension Island and the Galápagos, although the individual species often have very small ranges. Species in this genus are found in salt, brackish and fresh waters, mostly in anchialine habitats and none in the open sea.
Cavefish or cave fish is a generic term for fresh and brackish water fish adapted to life in caves and other underground habitats. Related terms are subterranean fish, troglomorphic fish, troglobitic fish, stygobitic fish, phreatic fish, and hypogean fish.
Iglica soussensis is a species of aquatic subterranean hydrobiid gastropod endemic to wells in the Souss Plain, Morocco. I. soussensis is only known from the type locality, a well in the Ait Msia village in the area of Agadir, or described by the IUCN as 'a well at Tamait Izder south of the Souss River north of Temsia, Morocco'. This species is a stygobiont, being restricted to aquatic subterranean habitats
Aenigmachanna gollum, the Gollum snakehead, is a species of aquifer-dwelling dragon snakehead fish that is endemic to the Indian state of Kerala.
The Alashanian pipistrelle is a species of bat in the family Vespertilionidae. It is found in China, South Korea, Mongolia, Japan, and Russia.
