15 Facts About Blue whale

Blue whale is a marine mammal and a baleen whale.

In general, blue whale populations migrate between their summer feeding areas near the poles and their winter breeding grounds near the tropics.

One of the first published descriptions of a blue whale comes from Robert Sibbald's Phalainologia Nova, after Sibbald found a stranded whale in the estuary of the Firth of Forth, Scotland, in 1692.

The earliest discovered anatomically modern blue whale is a partial skull fossil found in southern Italy, dating to the Early Pleistocene, roughly 1.

The earliest description of a possible hybrid between a blue and fin whale was a 20-meter anomalous female whale with the features of both the blue and the fin whales taken in the North Pacific.

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DNA tests done in Iceland on a blue whale killed in July 2018 by the Icelandic whaling company Hvalur hf, found that the whale was the offspring of a male fin whale and female blue whale; however, the results are pending independent testing and verification of the samples.

Molecular tests on a 21-meter pregnant female whale caught off Iceland in 1986 found that it had a blue whale mother and a fin whale father, while its fetus was sired by a blue whale.

At least four subspecies of blue whale are recognized, some of which are divided into population stocks or "management units".

Blue whale is a slender-bodied cetacean with a broad U-shaped head; thin, elongated flippers; a small 33 centimeters sickle-shaped dorsal fin located close to the tail and a large tail stock at the root of the wide and thin flukes.

Record-holder blue whale was recorded at 173 tonnes, with estimates of up to 199 tonnes .

Blue whale calls recorded off Sri Lanka have a three-unit phrase.

In March 2014, a commercial whale watch boat operator recorded an incident involving a group of orcas harassing a blue whale in Monterey Bay.

In Sri Lanka, a blue whale was documented with a net wrapped through its mouth, along the sides of its body, and wound around its tail.

Exposure to simulated MFA sonar was found to interrupt blue whale deep-dive feeding but no changes in behavior were observed in individuals feeding at shallower depths.

Analysis of the earwax of a male blue whale killed by a collision with a ship off the coast of California showed contaminants like pesticides, flame retardants, and mercury.