Chordates • Earth.com

North Atlantic right whale

(Eubalaena glacialis)

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Description

Like other right whales,the North Atlantic right whale,also known as the northern right whale or black right whale,is readily distinguished from other whales by the callosities on its head,a broad back without a dorsal fin,and a long arching mouth that begins above the eye.The body of the whale is very dark gray or black,occasionally with white patches on the belly.The right whale's callosities appear white due to large colonies of cyamids or whale lice. Adult North Atlantic right whales average 13–16 m (43–52 ft) in length and weigh approximately 40,000 to 70,000 kg (44 to 77 short tons),they are slightly smaller on average than the North Pacific species.The largest measured specimens have been 18.5 m (61 ft) long and 106,000 kg (234,000 lb).[citation needed] Females are larger than males.

Taxonomic tree:

Domain:
Kingdom: Animalia
Phylum:
Class: Mammalia
Order:Cetacea
Family:Balaenidae
Genus:Eubalaena
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