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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 ).
The International Union for Conservation of Nature assesses the orca's conservation status as data deficient because of the likelihood that two or more orca types are separate species. Some local populations are considered threatened or endangered due to prey depletion, habitat loss , pollution (by PCBs ), capture for marine mammal parks , [ 6 ...
The genus Orcinus was published by Leopold Fitzinger in 1860, [4] its type species is the orca named by Linnaeus in 1758 as Delphinus orca.Taxonomic arrangements of delphinids published by workers before and after Fitzinger, such as John Edward Gray as Orca in 1846 and Orca (Gladiator) in 1870, are recognized as synonyms of Orcinus.
Tahlequah, the Southern Resident orca who carried her dead calf for 1,000 miles over 17 days in 2018, is mourning the loss of another newborn, raising concerns about her health.
Articles relating to orcas (Orcinus orca, killer whales), toothed whales that are the largest members of the oceanic dolphin family. It is the only extant species in the genus Orcinus. Orcas are recognizable by their black-and-white patterned body.
Scientists witnessed one of the hunters, a male orca known as Starboard, single-handedly kill a 2.5-meter (8.2-foot) juvenile white shark within a two-minute time frame last year.
Moctezuma, who was first spotted in 1992, has been seen hunting other elasmobranch species such as the Munk’s pygmy devil ray, which is 1 meter (3.2 feet) wide, bull sharks and stingrays.
Following this, orca captures became widespread worldwide; an estimated 263 orcas were captured in the Salish Sea region alone between 1962 and 1977. Of these, 50 were taken to oceanariums, 12 died during capture, and 201 were released.