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Orcas also prey on larger species such as sperm whales, grey whales, humpback whales and minke whales. [ 84 ] [ 40 ] On three separate occasions in 2019 orcas were recorded to have killed blue whales off the south coast of Western Australia, including an estimated 18–22-meter (59–72 ft) individual. [ 89 ]
Orcas or killer whales have a cosmopolitan distribution and several distinct populations or types have been documented or suggested. Three to five types of orcas may be distinct enough to be considered different races , [ 1 ] subspecies , or possibly even species [ 2 ] (see Species problem ).
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]
Recent evidence indicates that whales are deviating from their known migratory destinations and longitudinal movement patterns across oceans. ... The whale’s route of migration, however, remains ...
Orcinus orca and its range (in blue) In biogeography , a cosmopolitan distribution is the range of a taxon that extends across most or all of the surface of the Earth, in appropriate habitats ; most cosmopolitan species are known to be highly adaptable to a range of climatic and environmental conditions, though this is not always so.
In coastal waters near Chile in 2023, a massive female killer whale walloped the much smaller dolphin, sending it flying out of the water. Within minutes, the unequal battle was over and the orca ...
In addition to identifying individual whales via their scars and body patterns, Bigg was able to successfully differentiate them by their habits and individual associations. Bigg was the first to identify transient orcas as significantly different in eating habits, behavior, and distribution from resident orcas; hence they bear his name.
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