Humpback whale (Megaptera novaeangliae)
Group formation: Solitary – gregarious (mother-calf pair/male escort, larger feeding groups)
Size: males 13-14m, females 15-16m, calf 6m
Weight: males 28tons, females 33tons, calf 2tons
Age: 45-100 yrs
Sexual maturity: males 7 yrs, females 5 yrs
Physical maturity: ca 20 yrs
Gestation: 11-12mths, with 2-3 yrs in between
Weaning: 6-7 months
Diet: Krill, small schooling fish such as Atlantic herring, Atlantic salmon, capelin, and American sand lance, as well as Atlantic mackerel, pollock, and haddock in the North Atlantic.
Distribution: Worldwide with 4 populations, in the North Atlantic, North Pacific and Southern Oceans
Norway: Migrate from breeding grounds in Cape Verden or the Caribbean to feeding grounds northern Norway and the Barents Sea, first animals arrive in northern Norway end of May and leave latest in February (after feeding on herring).
Population size: global ca. 80.000, heavily exploited (90% reduced)
Conservation Status: Status: Least Concern ver 3.1, Pop. trend: increasing
Threats: Vessel collisions, whaling (Greenland, Japan, Caribbean island Bequia in the nation of St. Vincent and the Grenadines), plastic pollution, man-made noise impacts (seismic surveys, military sonar), entanglement in fishing gear, over fishing