There are three types of Orca:
1- Resident: These are the most commonly sighted of the three populations in the coastal waters of the Pacific NW. The resident orcas' diet consists primarily of fish, and they live in complex and cohesive family groups known as pods. Female residents characteristically have a rounded dorsal fin tip that terminates in a sharp corner. They are known to visit certain areas consistently.
2- Transient: The diet of these orcas consists almost exclusively of marine mammals. They do not eat fish. Transients generally travel in small groups, usually of two to six animals. Unlike residents, transients may not always stay together as a family unit. Female transients are characterized by dorsal fins that are more triangular and pointed than those of residents.
3- Offshore: These orcas cruise the open oceans and feed primarily on fish, sharks, and turtles. They have been seen traveling in groups of up to 60. Currently, there is little known about the habits of this population, but they can be distinguished genetically from the residents and transients. Female offshores are characterized by dorsal fin tips that are continuously rounded.
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Check out these videos below (I realize they seem a bit despondent, however, the truth can help to educate and eventually provide positive changes in how these beautiful animals are protected)…
A three-part video history (below) of Orca's and their lives in captivity from the 1960's to the 1980's:
Part I – 1960's (above)
Part II – 1970's
Part III – 1980's
Update on Tilikum (#Tilikum): Tilikum, unfortunately, passed away on January 6th, 2017 (at age 37), after 33 years in captivity away from his pod (family). At least now he is free from captivity…