a migratory baleen whale, Balaenoptera musculus, mostly of oceans and seas in the Southern Hemisphere, growing to a length of 100 feet (30.5 meters) and having a furrowed, slate-blue skin mottled with lighter spots, in some seas acquiring a yellowish coating of diatoms on the underside: the largest mammal ever known, it is now endangered.
From swirls of schooling anchovies to blue whale migrations, the majesty of marine life is present in every episode.
As for the blue whale, no one would know to make it blue.
But the first full-blown whales were still a long way from a blue whale or any other baleen whale.
Perhaps some day another animal will evolve a new strategy that will let it get even bigger than a blue whale.
Fortunately, none have resumed hunting the blue whale species.
For example, blue whale sounds are so low that people can't hear them at all.
blue whale songs can last up to twenty minutes with a two-minute interval between notes.
Marine life ranges from kelp forests to the endangered blue whale.
The calls of the blue whale are perhaps the best known to date.
If you look closely, you can see a blue whale off the bow of this ship.
British Dictionary definitions for blue whale
the largest mammal: a widely distributed bluish-grey whalebone whale, Sibbaldus (or Balaenoptera) musculus, closely related and similar to the rorquals: family BalaenopteridaeAlso called sulphur-bottom