BLUE WHALE ©news.discovery.com
BLUE WHALE ©news.discovery.com

Order Cetartiodactyla

Family Balaenopteridae

Scientific Name

Balaenoptera musculus

Thumbnail Description

Blue whale is the largest living mammal on earth. It is also the heaviest known to have existed. An adult blue whale can eat up to 40 million krill in a day.

Size and Weight

Length: 27 metres (89 ft);

Longest specimen: 33.6 and 33.3 metres (110 and 109 ft)

Weight: 150–170 tonnes (170–190 short tons)

Habitat

Cold and temperate waters, coastal to deeper ocean waters

Distribution

North Atlantic, North Pacific, Southern Hemisphere

Diet

Krill, copepods, zooplankton, Meganyctiphanes norvegica, Thysanoessa raschii, Thysanoessa inermis, Thysanoessa longicaudata, Euphausia pacifica, Thysanoessa inermis, Thysanoessa longipes, Thysanoessa spinifera, Nyctiphanes simplex, Nematoscelis megalops, Euphausia superba, Euphausia crystallorophias, Euphausia valentini, and Nyctiphanes australis

Reproduction

1

Population

5,000 – 12,000

Lifespan

80 years

Speed

50 km/h (31 mph)

Predator

Orca

Conservation Status

Endangered