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Humpback whale breach sequence. A breach or a lunge is a leap out of the water, also known as cresting. The distinction between the two is fairly arbitrary: cetacean researcher Hal Whitehead defines a breach as any leap in which at least 40% of the animal's body clears the water, and a lunge as a leap with less than 40% clearance. [2]
Whales have beached throughout human history, with evidence of humans salvaging from stranded sperm whales in southern Spain during the Upper Magdalenian era some 14,000 years before the present. [2] Some strandings can be attributed to natural and environmental factors, such as rough weather, weakness due to old age or infection, difficulty ...
There are approximately 89 [8] living species split into two parvorders: Odontoceti or toothed whales (containing porpoises, dolphins, other predatory whales like the beluga and the sperm whale, and the poorly understood beaked whales) and the filter feeding Mysticeti or baleen whales (which includes species like the blue whale, the humpback ...
The Yakutat Bay belugas are not considered to be a true stock because they have only been present in these waters since the 1980s, and are believed to be of Cook Inlet origin. It is estimated that less than 20 whales inhabit the bay year-round. [142] Overall the beluga population is estimated to be 150,000–200,000 animals.
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Several whale species exhibit sexual dimorphism, in that the females are larger than males. Baleen whales have no teeth; instead, they have plates of baleen, fringe-like structures that enable them to expel the huge mouthfuls of water they take in while retaining the krill and plankton they feed on. Because their heads are enormous—making up ...
Whales can communicate through sounds ranging from clicks, whistles and pulsed calls. These loveable creatures are highly social and travel in groups called 'pods' . Killer whales have no ...
Aside from humans, just five toothed whale species are known to go through this natural biological process. Menopause ‘may explain why some female whales live decades longer than others’ Skip ...