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The orca or killer whale, is a toothed whale that is the largest member 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. A cosmopolitan species, orcas are found in diverse marine environments, from Arctic to Antarctic regions to tropical seas.
Whale watching is the practice of observing whales and dolphins (cetaceans) in their natural habitat. Whale watching is mostly a recreational activity, but it can also serve scientific and/or educational purposes. A study prepared for International Fund for Animal Welfare in 2009 estimated that 13 million people went whale watching globally in 2008. Whale watching generates $2.1 billion per annum in tourism revenue worldwide, employing around 13,000 workers. The size and rapid growth of the industry has led to complex and continuing debates with the whaling industry about the best use of whales as a natural resource.
Pilot whales are cetaceans belonging to the genus Globicephala. The two extant species are the long-finned pilot whale and the short-finned pilot whale. The two are not readily distinguishable at sea, and analysis of the skulls is the best way to distinguish between the species. Between the two species, they range nearly worldwide, with long-finned pilot whales living in colder waters and short-finned pilot whales living in tropical and subtropical waters. Pilot whales are among the largest of the oceanic dolphins, exceeded in size only by the orca. They and other large members of the dolphin family are also known as blackfish.
A5 Pod is a name given to a group of orcas found off the coast of British Columbia, Canada. It is part of the northern resident population of orcas - a name given to the fish-eating orcas found in coastal waters ranging from mid-Vancouver Island in British Columbia up through Haida Gwaii and into the southeastern portions of Alaska. The orcas of the Northern Resident community are divided into vocally distinctive clans known as the A clan, the G clan, and the R clan. Members of the A5 Pod belong to the A clan. As of 2013, A5 Pod consisted of 10 members.
Corky II, often referred to as just Corky, is a female captive orca from the A5 Pod of northern resident orcas. At approximately the age of four, Corky was captured from Pender Harbour off the coast of British Columbia on December 11, 1969. She has lived at SeaWorld San Diego in San Diego, California since 1987. As of 2023, she is the oldest and longest kept captive orca.
Old Tom was a killer whale (orca) known to whalers in the port of Eden, New South Wales, on the southeast coast of Australia. Old Tom measured 22 feet (6.7 m) and weighed 6 tons, with a 3.33 ft (1.01 m) skull and teeth about 5.31 inches (135 mm) long.
Springer, officially named A73, is a wild orca from the Northern Resident Community of orcas, which frequents the waters off the northern part of Vancouver Island every summer. In January 2002, Springer, then a calf developmentally equivalent to a human toddler, was discovered alone and emaciated some 250 miles from the territory of her family. Experts identified Springer by her vocal calls that are specific to her family, or "pod," and by examining photographs of her eye patch. They were also able to determine where Springer's pod was currently located.
The A30 matriline is the name given to the most commonly seen orca matriline in British Columbia. The matriline is currently made of 3 generations, with a total of 12 individuals. It is one of the 3 matrilines in A1 pod, one of the 10 pods of the A-clan. The matriline was present in over 60% of all of the encounters in the Johnstone Strait region, making it one of the best known matrilines. The group's size has increased, from 6 in the mid-1970s to 10 as of 2013 then 12 in 2017. It is most frequently seen in Johnstone Strait from late spring to early fall, often traveling with other pods of the Northern Resident Community.
Dozens of orcas are held in captivity for breeding or performance purposes. The practice of capturing and displaying orcas in exhibitions began in the 1960s, and they soon became popular attractions at public aquariums and aquatic theme parks due to their intelligence, trainability, striking appearance, playfulness, and sheer size. As of June 26, 2023, there were at least 53 orcas in captivity worldwide, 29 of which were captive-born. At that time, there were 18 orcas in the SeaWorld parks.
A4 pod is a killer whale family in British Columbia. As of March 2013, it consists of three matrilines and 15 members and is the family of Springer, the first orca to be successfully reintroduced to the wild after being handled by humans. A4 pod is part of the northern resident orcas found in coastal waters ranging from mid-Vancouver Island to southeastern Alaska up through Haida Gwaii. The community is made up of three clans known as A, G and R clans, each possessing a distinctive dialect and consisting of several related pods. A4 pod belongs to the biggest clan, A clan.
Michael Andrew Bigg was an English-born Canadian marine biologist who is recognized as the founder of modern research on killer whales. With his colleagues, he developed new techniques for studying killer whales and, off British Columbia and Washington, conducted the first population census of the animals anywhere in the world. Bigg's work in wildlife photo-identification enabled the longitudinal study of individual killer whales, their travel patterns, and their social relationships in the wild, and revolutionized the study of cetaceans.
The southern resident orcas, also known as the southern resident killer whales (SRKW), are the smallest of four communities of the exclusively fish-eating ecotype of orca in the northeast Pacific Ocean. The southern resident orcas form a closed society with no emigration or dispersal of individuals, and no gene flow with other orca populations. The fish-eating ecotype was historically given the name 'resident,' but other ecotypes named 'transient' and 'offshore' are also resident in the same area.
A1 pod is a killer whale family in British Columbia. It currently consists of 3 matrilines and 20 members and is the most commonly encountered pod in the Northern resident killer whale community. This community is found in coastal waters ranging from mid-Vancouver Island up through the Queen Charlotte Islands, although A1 pod has yet to be seen this far north. The community is made up of three clans known as A, G and R clans, each possessing a distinctive dialect and consisting of several related pods. A1 pod belongs to the biggest clan, A clan.
Alexandra Bryant Hubbard Morton is an American and Canadian marine biologist best known for her 30-year study of wild killer whales in the Broughton Archipelago in British Columbia. Since the 1990s, her work has shifted toward the study of the impact of salmon farming on Canadian wild salmon.
Chimo was a young female orca exhibited in Sealand of the Pacific at The Oak Bay Marina in The Municipality of Oak Bay, British Columbia, Canada near the city of Victoria from 1970 to 1972. Chimo was notable for being the only partially albino orca ever exhibited in captivity. Chimo was captured in an effort to find a mate for the park's star attraction, Haida. After her capture, Sealand became famous. Chimo's probable mother was another orca by the name of Scarredjaw Cow (T3), captured along with Chimo. Chimo died in 1972 from complications caused by Chédiak–Higashi syndrome, the syndrome which caused her albinism. Chimo never bore any calves.
Erich Hoyt is a whale and dolphin (cetacean) researcher, conservationist, lecturer and author of 26 books and more than 700 reports, articles and papers. His book Marine Protected Areas for Whales, Dolphins and Porpoises, has been widely reviewed as the "definitive reference of the current extent of cetacean ecosystems-based management" and as "a unique and essential book for anybody interested in the conservation and protection of cetaceans. [This] definitive source on MPAs marine protected areas for cetaceans…will influence the design and management of this important and rapidly developing conservation tool." Choice listed the book as an "Outstanding Academic Title’ for the year 2012. Since 2013, as Research Fellow with Whale and Dolphin Conservation (WDC) and IUCN SSC/WCPA Marine Mammal Protected Areas Task Force co-chair with Giuseppe Notarbartolo di Sciara, Hoyt has focussed on the creation and development of the new conservation tool of Important Marine Mammal Areas, or IMMAs. In 2016, following a MAVA Foundation pilot project to identify IMMAs in the Mediterranean, the Task Force's GOBI collaboration funded by the German Climate Initiative (IKI) began a six-year project to identify and implement IMMAs across most of the southern hemisphere. The IMMA tool has been received and widely endorsed by the Convention on Migratory Species (CMS), the Convention on Biological Diversity (CBD), various commissions within the International Union for Conservation of Nature (IUCN), the International Whaling Commission, as well as national governments and scientists.
Granny, also known as J2, was a female orca of the J pod of southern resident orcas notable for her long life. Early estimates placed her birth in 1911, putting her at 105 years old at the time of her death. However, this estimate was later revealed to have been based on mistaken information and more recent studies put her at 65–80 years old. If she was 105, she would have been the oldest known orca at the time of her death. Granny lived in the northeast Pacific Ocean and coastal bays of Washington state and British Columbia. She was last seen on October 12, 2016, and was considered deceased by The Center for Whale Research in January 2017.
Port and Starboard are a pair of adult male orcas notable for preying on great white sharks off the coast of South Africa. The duo are identified as having rare and distinct collapsed dorsal fins and they are named for the nautical terms, as Port's fin collapses left and Starboard's collapses right. Port and Starboard are part of a distinctive "flat-toothed" ecotype present around South Africa.
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, subspecies, or possibly even species. The IUCN reported in 2008, "The taxonomy of this genus is clearly in need of review, and it is likely that O. orca will be split into a number of different species or at least subspecies over the next few years." Although large variation in the ecological distinctiveness of different orca groups complicate simple differentiation into types. Mammal-eating orcas in different regions were long thought likely to be closely related, but genetic testing has refuted this hypothesis.
References
- 1 2 3 "Russian scientists seeking white whale -- really". Fox News . April 23, 2012. Retrieved April 23, 2012.
- 1 2 3 "White killer whale adult spotted for first time in wild". BBC News . April 23, 2012. Retrieved April 23, 2012.
- ↑ Dell'Amore, Christine (27 April 2012). "White Killer Whale Spotted—Only One in the World?". National Geographic. Archived from the original on December 3, 2021. Retrieved 3 December 2021.
- ↑ Hoyt, Erich (7 September 2016). "The return of Iceberg, the all-white killer whale". Whale & Dolphin Conservation USA. Retrieved 3 December 2021.
- ↑ Johnston, Ian (2 September 2016). "Five rare white killer whales spotted together in a sign of dangerous inbreeding". The Independent. Retrieved 3 December 2021.
