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North Pacific right whale in Half Moon Bay, California, 20 March 1982, photo by Jim Scarff. The right whales were first classified in the genus Balaena in 1758 by Carl Linnaeus, who at the time considered all of the right whales (including the bowhead) as a single species. Through the 19th and 20th centuries, in fact, the family Balaenidae has ...
Like other right whales, the North Atlantic right whale, also known as the northern right whale or black right whale, [2] is readily distinguished from other cetaceans by the absence of a dorsal fin on its broad back, short, paddle-like pectoral flippers and a long arching mouth that begins above the eye. Its coloration is dark grey to black ...
...on average, a whale or dolphin will eat four to five percent of its body weight in food per day. That means that a 100 ton blue whale will eat almost five tons of krill per day, or that a 200kg bottlenose dolphin will eat 10kg of fish per day!
With a population estimated at between 300-350 individuals, [19] the North Atlantic right whale is the most critically endangered great whale. The Northern Pacific right whale is also endangered with only about 500 individuals extant. [16] [17] The Southern right whale (~7500 individuals in 1997) and the Bowhead whale (20,000 to 40,000) have ...
On average, a bubble blast came 27 seconds after a whale dove for food, and most were observed while the whales were doing headstands. The older and bigger a whale got, the greater the probability ...
A North Atlantic right whale named Archipelago, or No. 3370, was seen Wednesday surface feeding in Cape Cod Bay, one of the first two right whales sighted in Cape Cod Bay this season.
The right whales are considered to be the 149th and 150th documented cases in the ongoing North Atlantic right whale Unusual Mortality Event (UME), which includes dead, seriously injured or health ...
They are classified in the family Balaenidae with the bowhead whale. Right whales have rotund bodies with arching rostrums , V-shaped blowholes and dark gray or black skin. The most distinguishing feature of a right whale is the rough patches of skin on its head, which appear white due to parasitism by whale lice .