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Balaenidae (/ b ə ˈ l ɛ n ɪ d eɪ,-d iː /) is a family of whales of the parvorder Mysticeti (baleen whales) that contains mostly fossil taxa and two living genera: the right whale (genus Eubalaena), and the closely related bowhead whale (genus Balaena).
The fin whale is the fastest among baleen whales, having been recorded travelling as fast as 10 m/s (36 km/h; 22 mph), and sustaining a speed of 2.5 m/s (9.0 km/h; 5.6 mph) for an extended period. [51] While feeding, the rorqual jaw expands to a volume that can be bigger than the whale itself; [52] to do this, the
These are narrow and approximately 2–2.8 m (6.6–9.2 ft) long, and are covered in very thin hairs. [27] Right whales have a distinctive wide V-shaped blow, caused by the widely spaced blowholes on the top of the head. The blow rises 5 m (16 ft) above the surface. [28]
In one study, the brain size of two males that measured 12 and 13.3 m (39 and 44 ft) in total length, were recorded at 2.072 and 2.280 kg (4.57 and 5.03 lb), respectively. With a gyrencephalic index of 2.32, the brains of the two males were found to exhibit extreme gyrification .
The southern right whale (Eubalaena australis) is a baleen whale, one of three species classified as right whales belonging to the genus Eubalaena.Southern right whales inhabit oceans south of the Equator, between the latitudes of 20° and 60° south. [5]
The blue whale (Balaenoptera musculus) is a marine mammal and a baleen whale.Reaching a maximum confirmed length of 29.9 m (98 ft) and weighing up to 199 t (196 long tons; 219 short tons), it is the largest animal known ever to have existed.
In an update to the YouTube Kids app that month, a more prominent disclaimer was added to its first-time setup process, stating that the service cannot fully guarantee the appropriateness of videos that were not manually curated, and informing parents of means to report and block videos that they do not find suitable. [8]
(v. 2013.2, the data is current as of March 5, 2014 [1]) and Endangered Species Act: E - endangered, T - threatened XN, XE - experimental non essential or essential population E(S/A), T(S/A) - endangered or threatened due to similarity of appearance (selected only taxa found in the US, the data is current as of March 28, 2014 [2])