Arnoux’s beaked whales resemble Baird’s beaked whales, but Arnoux’s is slightly smaller. The genus Berardius has two species, Baird’s beaked whale Berardius bairdii, found in the North Pacific and adjacent waters, and Arnoux’s beaked whale B. arnuxii , found in the Southern Ocean 3 . Females reach lengths of about 36 feet, while males are slightly smaller at about 35 feet. Baird’s beaked whale is found in the east from the southern part of the Gulf of California, to the Bering, Japanese and Okhotsk Seas in the west and in the temperate North Pacific.

A new study, published Wednesday in Royal Society Open Science, is the first to look at a population of these whales that lives off Cape Hatteras, N.C. Beaked whales are a group of cetaceans noted as being one of the least known groups of mammals because of their deep-sea habitat and apparent low abundance.

Females reach lengths of about 40 feet (13 m), while males are slightly smaller at about 35 feet (11.5 m). Females reach lengths of about 40 feet (13 m), while males are slightly smaller at about 35 feet (11.5 m). The Baird's Beaked Whale Berardius bairdii. Baird’s beaked whales, sometimes called “giant bottlenose whales,” are the largest members of the beaked whale family (Ziphiidae). According to the American Cetacean Society, Baird's beaked whales are the largest of all beaked whales and could potentially reach a maximum length of about 42 feet. With long, slender bodies, they have proud foreheads which protrude in a dense lump. Baird’s beaked whales, Berardius bairdii (Stejneger, 1883), aka north Pacific bottle-nosed whales, are the largest of the beaked whales reaching up to 12.8 m in length. They are predominantly dark brown in color with paler coloring on their head and ventral sides (undersides), which also have white patches. Little is known about Baird’s beaked whale reproduction. A whale breathes through a blowhole at the top of its head, taking in air through the blowhole when at the water’s surface. They and Arnoux’s beaked whale may well represent different populations of the same species; only through comparison of specimens can […] These whales reach up to 9.75 m in length, and their females are thought to be slightly larger than the males. Baird's beaked whales are the largest beaked whales and can grow to just over 11 metres in length, with females just pipping the males as the larger sex.

The majority of information that is known about the species biology and life history is a result of strandings (which appear to peak in both the winter and spring months), primarily off the west coast of Japan and the Aleutian Islands. With long, slender bodies, they have proud foreheads which protrude in a dense lump. They prefer deep ocean waters of 1,000 - 3,000 meters, where most of their prey can be found. Arnoux’s beaked whales resemble Baird’s beaked whales, but Arnoux’s is slightly smaller.

It is believed that … As adults, they can weigh up to approximately 26,455 pounds. Acknowledgements | Site Map Calves are about 4.5 meters at birth. Only three to four of the 22 species are reasonably well-known.