This is a highly gregarious species, occasionally being sighted in groups of up to 1,000.

Subspecies
None.

Life span
Unknown.

Statistics
Body length: 1.9-2.5m, Weight: 165-200kg.

Physical description
Atlantic white-sided dolphins have a black/dark upper surface, grey flank stripe, white patch below the fin, yellowish patch on tail stock, and a white underside. They also have a tall dorsal fin.

Distribution
Atlantic white-sided dolphins inhabit the north Atlantic and Arctic oceans, in cold temperate and polar regions.

Diet
Atlantic white-sided dolphins feed on fish, squid and prawns.

Behaviour
Atlantic white-sided dolphin live in groups of 5-50 (although up to 1,000 has been reported) and are often seen in the company of other species.

Conservation status
They are not listed by the IUCN. Global threats include hunting, prey depletion, pollution and entanglement in nets.