Drift whales were utilized in the earliest years of the colony, and shore boating for the baleen (or " right ") whale - rich in bone and in blubber yielding common oil - was an industry already regulated by various towns before 1650; but the pursuit of the sperm whale did not begin until about 1713.
The whale fishery also has greatly fallen off; there is no profit on the oil and the whales are sought for the baleen alone; they are much less numerous too than they once were, and have to be sought farther and farther north.
baleen plates of a blue whale may be up to 1 meter long.
Like most other baleen whales, they spend the winters in warm waters and migrate to cold seas to feed in summer.
Believe it or not, the larger baleen whales are still commercially extinct.
They have very long flexible baleen plates that catch the tiny plankton in the hairs.
Rorqual whales such as the fin and minke whales have much shorter, firmer baleen and feed by gulping.
It can record baleen whale calls within an area of up to 50 km around the device.
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