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Given the rarity of sightings Their weight is unknown. Leonhard Hess Stejneger collected the type specimen (a beach-worn skull) on Bering Island in 1883, from which Frederick W. True provided the species' description in 1885. Ranging in length from 3.7 metres (12.1 feet) for the dwarf, or pygmy, beaked whale (Mesoplodon peruvianus) to nearly 13 metres (42.7 feet) for the giant bottlenose whale (Berardius bairdii), these mammals weigh between 1,000 and 14,000 kg (2,200 and 31,000 pounds). Species Details; Observations; Maps; Photos; Sounds; Statistics; On/in; Names; I've seen this species! Stejneger's beaked whale (Mesoplodon stejnegeri), also known as the Bering Sea beaked whale or the saber-toothed whale, is a relatively unknown member of the genus Mesoplodon inhabiting the northern North Pacific Ocean. New Technologies Aid Each Survey. What do Pygmy beaked whales look like? They include beaked whales, pygmy sperm whales – often called kogia for their scientific name – and sperm whales. anthropogenic sounds such as sonar are often focused on beaked whales (Barlow and Gisiner 2006), the impacts of such sounds on -diving deep pygmy beaked whales also warrants concern. The small triangular dorsal fin is a distinctive feature of this little whale with a broad base and set well back on the body. The small triangular dorsal fin is a distinctive feature of this little whale with a broad base and set well back on the body. It is known from only 13 dead specimens and less than […] What do Pygmy beaked whales look like? The pygmy beaked whale has a slender, spindle-shaped body, a small head, curved mouthline, narrow, sloping forehead and slightly bulging ‘melon’ (top and front of the head). Behaviour Although only one animal has been stranded at a time (implying that they travel alone), the few sightings that there have been have usually been of a pair of Pygmy Beaked Whales. Pygmy Beaked Whale Mesoplodon peruvianus Reyes, Mead & Van Waerebeek, 1991. Lesser Beaked Whale, Peruvian beaked whale Family: Ziphiidae Genus: Mesoplodon Species: M. peruvianus Reyes, Mead, and Weerebeek, 1991 The pygmy beaked whale is the smallest of all beaked whales, and was discovered in 1991 from a specimen that drowned in a coastal fishing net. The pygmy beaked whale is one of the most recently described members of the genus, and appears to be the smallest of the species of Mesoplodon.Two morphs exist, a scarred black and white form that is easily identified in the field (presumably adult males), and a smaller uniformly brown one (probably females and subadults). They are not listed as "threatened" or "endangered" under the Endangered Species Act nor as "depleted" under the MMPA. The pygmy beaked whale has a slender, spindle-shaped body, a small head, curved mouthline, narrow, sloping forehead and slightly bulging ‘melon’ (top and front of the head). From a distance, the back and dorsal fin could be confused with those of a beaked whale; however, beaked whales have very different head shapes. Mammals Ziphiidae Mesoplodon Mesoplodon peruvianus. An adult Pygmy Beaked Whale reaches about 3.5 metres (or between 11 and 12 feet) in length. The 2017 survey was dedicated to the True’s beaked whale habitat near Georges Bank. Matsuishi also said the "new" species might simply be a species already known to science, such as the pygmy beaked whale (Mesoplodon peruvianus) or even the Perrin's beaked whale, which was the researchers' initial assumption.

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