Sei Whale - Balaenoptera borealis
Sei Whale Statistics
Maximum length: 17.7m (58ft) males / 20m (66ft) females
Adult weight: 33 tonnes
Life span:
Sei Whale - Balaenoptera borealis
Sei Whale Statistics
Maximum length: 17.7m (58ft) males / 20m (66ft) females
Adult weight: 33 tonnes
Life span: 60 years
Sexual maturity: 8 - 11 years
Gestation: 10-5 - 12 months
Birth length: 4.5m (15ft)
Birth weight: 650 - 800kg (1300 - 1800lbs)
Dive duration: 20 mins
Feed on: more varied food than similar whales, mainly krill when in Antarctica, usually only one type of food at a time
Distribution: all oceans, though waters from 8 - 18°C (46 - 64°F) are preferred, not found as far south as the other rorquals
Current world population: 30 000 / pre-whaling 150 000
Conservation status: Endangered
The sei (pronounced "say") whales are among the more elusive of the larger whales, not coming very close to land at any time and not forming large groups or "schools".
They are found like many whales in both Northern and Southern hemispheres following the best feeding at different times of year. Only the larger older individuals tend to g