''Bunodosoma cavernatum'', commonly known as the warty sea anemone or the American warty anemone, is a

species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...

sea anemone Sea anemones are a group of predation, predatory marine invertebrates of the order (biology), order Actiniaria. Because of their colourful appearance, they are named after the ''Anemone'', a terrestrial flowering plant. Sea anemones are classifi ...

in the

family Family (from la, familia) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its ...

Actiniidae. It occurs in the tropical and subtropical western

Atlantic Ocean The Atlantic Ocean is the second-largest of the world's five oceans, with an area of about . It covers approximately 20% of Earth's surface and about 29% of its water surface area. It is known to separate the " Old World" of Africa, Europe ...

and the

Caribbean Sea The Caribbean Sea ( es, Mar Caribe; french: Mer des Caraïbes; ht, Lanmè Karayib; jam, Kiaribiyan Sii; nl, Caraïbische Zee; pap, Laman Karibe) is a sea of the Atlantic Ocean in the tropics of the Western Hemisphere. It is bounded by Mexico ...

. It was first described in 1802 by the French naturalist Louis Augustin Guillaume Bosc, one of fourteen marine invertebrates described and named by him.

Description

''Bunodosoma cavernatum'' is a robust species with a muscular trunk covered with 96 vertical rows of small, rounded, wart-like vesicles. The oral disc is smooth and the approximately 96

tentacle In zoology, a tentacle is a flexible, mobile, and elongated organ present in some species of animals, most of them invertebrates. In animal anatomy, tentacles usually occur in one or more pairs. Anatomically, the tentacles of animals work main ...

s are arranged in five cycles. Each tentacle is of moderate length, smooth and tapering, the inner tentacles being longer than the outer ones. At their base are about 48 rounded lobular projections called acrorhagi which are armed with stinging cells. The colour of the trunk varies, being some shade of olive green, orange, red or brown. The tentacles are olive green, pale orange or reddish, with the oral disc being yellowish-brown, reddish-brown or olive green, sometimes with faint pale radial striping. When fully extended this sea anemone can reach in height, and the tentacles and oral disc when extended can reach in diameter.

Distribution and habitat

''Bunodosoma cavernatum'' is native to the tropical and subtropical western

and the

, its range extending from

North Carolina North Carolina () is a state in the Southeastern region of the United States. The state is the 28th largest and 9th-most populous of the United States. It is bordered by Virginia to the north, the Atlantic Ocean to the east, Georgia and So ...

Texas Texas (, ; Spanish language, Spanish: ''Texas'', ''Tejas'') is a state in the South Central United States, South Central region of the United States. At 268,596 square miles (695,662 km2), and with more than 29.1 million residents in 2 ...

, including

Florida Florida is a state located in the Southeastern region of the United States. Florida is bordered to the west by the Gulf of Mexico, to the northwest by Alabama, to the north by Georgia, to the east by the Bahamas and Atlantic Ocean, and to ...

and the

West Indies The West Indies is a subregion of North America, surrounded by the North Atlantic Ocean and the Caribbean Sea that includes 13 independent island countries and 18 dependencies and other territories in three major archipelagos: the Greater A ...

. It occurs in the lower part of the

intertidal zone The intertidal zone, also known as the foreshore, is the area above water level at low tide and underwater at high tide (in other words, the area within the tidal range). This area can include several types of habitats with various species o ...

on rocks and jetties, and on other hard substrates underlying gravelly or sandy bottoms.

Ecology

''Bunodosoma cavernatum'' is nocturnal; during the night it expands and spreads out its tentacles to feed but during the day, it contracts into a reddish gelatinous blob. It feeds on small fish and any invertebrates that are encountered by its tentacles. The remains of a scorched mussel (''Brachidontes exustus'') have been found inside one individual.

References

{{Taxonbar, from=Q13446581 Actiniidae Animals described in 1802