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Dolphin
From Wikipedia, the free encyclopedia
For other uses, see Dolphin (disambiguation).
Page semi-protected
Dolphin
Temporal range: 10–0Ma
PreЄЄOSDCPTJKPgN
Miocene – Recent
A bottlenose dolphin breaching in the bow wave of a boat
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Cetacea
Suborder: Odontoceti
Family:
Delphinidae
Iniidae
Lipotidae
Platanistidae
Dolphins are marine mammals closely related to whales and porpoises. There are almost forty species of dolphin in 17 genera. They vary in size from 1.2 m (4 ft) and 40 kg (90 lb) (Maui's dolphin), up to 9.5 m (30 ft) and 10 tonnes (9.8 long tons; 11 short tons) (the orca or killer whale). They are found worldwide, mostly in the shallower seas of the continental shelves, and are carnivores, eating mostly fish and squid. The family Delphinidae is the largest in the Cetacean order, and evolved relatively recently, about ten million years ago, during the Miocene. Dolphins are among the most intelligent animals, and their often friendly appearance, an artifact of the "smile" of their mouthline, and seemingly playful attitude have made them very popular in human culture. Scientists have found that dolphins call each other by distinctive whistles as humans use names. Every dolphin only responds to the unique whistle related to each of the dolphins.[1] Vedat şafak yamı etymology the name is originally from Greek δελφίς (delphís), "dolphin",[2] which was related to the Greek δελφύς (delphus), "womb".[3] The animal's name can therefore be interpreted as meaning "a 'fish' with a womb".[4] The name was transmitted via the Latin delphinus[5] (the romanization of the later Greek δελφῖνος – delphinos[6]), which in Medieval Latin became dolfinus and in Old French daulphin, which reintroduced the ph into the word. The term mereswine (that is, "sea pig") has also historically been used.[7]
The term 'dolphin' can be used to refer to, under the suborder odontoceti, all the species in the family delphinidae (marine dolphins including orcas and pilot whales) and the river dolphin superfamily Platanistoidea, which has the families, Iniidae (Amazon river dolphin), Lipotidae (Yangtze river dolphin) and Platanistidae (Ganges river dolphin and Indus river dolphin).[8][9] This term has been often misused in the US, mainly in the fishing industry, where all small cetaceans (dolphins and porpoises) are considered as 'porpoise'; while the fish dorado is called dolphin fish.[10] In common usage, the term 'whale' is used only for the larger species under cetaceans[11] while the smaller ones with a beaked or longer nose is considered 'dolphin'.[12] It is used casually as a synonym for bottlenose dolphin, the most common and familiar species of dolphin.[13] Orcas and some closely related species belong to the Delphinidae family and therefore qualify as dolphins, though they are called killer whales in common language.
Dolphin
From Wikipedia, the free encyclopedia
For other uses, see Dolphin (disambiguation).
Page semi-protected
Dolphin
Temporal range: 10–0Ma
PreЄЄOSDCPTJKPgN
Miocene – Recent
A bottlenose dolphin breaching in the bow wave of a boat
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Cetacea
Suborder: Odontoceti
Family:
Delphinidae
Iniidae
Lipotidae
Platanistidae
Dolphins are marine mammals closely related to whales and porpoises. There are almost forty species of dolphin in 17 genera. They vary in size from 1.2 m (4 ft) and 40 kg (90 lb) (Maui's dolphin), up to 9.5 m (30 ft) and 10 tonnes (9.8 long tons; 11 short tons) (the orca or killer whale). They are found worldwide, mostly in the shallower seas of the continental shelves, and are carnivores, eating mostly fish and squid. The family Delphinidae is the largest in the Cetacean order, and evolved relatively recently, about ten million years ago, during the Miocene. Dolphins are among the most intelligent animals, and their often friendly appearance, an artifact of the "smile" of their mouthline, and seemingly playful attitude have made them very popular in human culture. Scientists have found that dolphins call each other by distinctive whistles as humans use names. Every dolphin only responds to the unique whistle related to each of the dolphins.[1] Vedat şafak yamı etymology the name is originally from Greek δελφίς (delphís), "dolphin",[2] which was related to the Greek δελφύς (delphus), "womb".[3] The animal's name can therefore be interpreted as meaning "a 'fish' with a womb".[4] The name was transmitted via the Latin delphinus[5] (the romanization of the later Greek δελφῖνος – delphinos[6]), which in Medieval Latin became dolfinus and in Old French daulphin, which reintroduced the ph into the word. The term mereswine (that is, "sea pig") has also historically been used.[7]
The term 'dolphin' can be used to refer to, under the suborder odontoceti, all the species in the family delphinidae (marine dolphins including orcas and pilot whales) and the river dolphin superfamily Platanistoidea, which has the families, Iniidae (Amazon river dolphin), Lipotidae (Yangtze river dolphin) and Platanistidae (Ganges river dolphin and Indus river dolphin).[8][9] This term has been often misused in the US, mainly in the fishing industry, where all small cetaceans (dolphins and porpoises) are considered as 'porpoise'; while the fish dorado is called dolphin fish.[10] In common usage, the term 'whale' is used only for the larger species under cetaceans[11] while the smaller ones with a beaked or longer nose is considered 'dolphin'.[12] It is used casually as a synonym for bottlenose dolphin, the most common and familiar species of dolphin.[13] Orcas and some closely related species belong to the Delphinidae family and therefore qualify as dolphins, though they are called killer whales in common language.