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An entanglement of a North Pacific right whale at Hokkawa, Higashiizu on April 4, 2020, photo by Yoshiyuki Nakawaza, Dive Green. The whale was released next day. In its 2013 evaluation of the threats to survival of the North Pacific right whale, NOAA examined the possible impacts of entanglement in fishing gear and ingestion of marine debris ...
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 ...
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 ...
Story at a glance The National Oceanic and Atmospheric Administration Fisheries is considering increasing critical habitat in Alaska for the endangered North Pacific right whale. The whale is the ...
Binomial name. Lissodelphis borealis. Peale, 1848 [3] Range map. The northern right whale dolphin (Lissodelphis borealis) is a small, slender species of cetacean found in the cold and temperate waters of the North Pacific Ocean. Lacking a dorsal fin, and appearing superficially porpoise -like, it is one of the two species of right whale dolphin.
Using the techniques developed by Taiji, the Japanese mainly hunted four species of whale: the North Pacific right, the humpback, the fin, and the gray whale. They also caught the occasional blue, sperm, or sei/Bryde's whale . In 1853, the US naval officer Matthew Perry forced Japan to open up to foreign trade.
The species is an average-sized oceanic dolphin. Females weigh up to 150 kg (330 lb) and males 200 kg (440 lb) with males reaching 2.5 m (8.2 ft) and females 2.3 m (7.5 ft) in length. Pacific white-sided dolphins usually tend to be larger than dusky dolphins. Females reach maturity at seven years.
The northern right whale dolphin is the only dolphin in the Pacific with this property. Similarly, the Southern is the only finless dolphin in the southern hemisphere. The two species can be readily distinguished (apart from the geographical separation in their ranges) by the extent of the whiteness on the body.