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Northern resident orcas, also known as northern resident killer whales (NRKW), are one of four separate, non-interbreeding communities of the exclusively fish-eating ecotype of orca in the northeast portion of the North Pacific Ocean.
Prior to the advent of industrial whaling, great whales may have been the major food source for orcas. The introduction of modern whaling techniques may have aided orcas by the sound of exploding harpoons indicating the availability of prey to scavenge, and compressed air inflation of whale carcasses causing them to float, thus exposing them to ...
The pelagic food web, showing the central involvement of marine microorganisms in how the ocean imports nutrients from and then exports them back to the atmosphere and ocean floor. A marine food web is a food web of marine life. At the base of the ocean food web are single-celled algae and other plant-like organisms known as phytoplankton.
The killer whale pod in Mexico hunts and attacks much larger whale sharks by targeting them from below, a study finds Killer Whales Are Hunting Whale Sharks — the Largest Fish in the World, New ...
Killer whale in the Salish Sea is observed harassing a porpoise, (Wild Orca) The whale sharks were temporarily stunned and flipped over, enabling the orcas access to the lipid-rich liver of the fish.
Carousel feeding is a cooperative hunting method used by Norwegian orcas (Orcinus orca) to capture wintering Norwegian spring-spawning herring (Clupea harengus). [1] The term carousel feeding was first used to describe a similar hunting behaviour in bottlenose dolphins (Turslops truncatus) in the Black Sea. [2]
Python Poison 1978 1987 60 0-8051-0226-4 11055 Monaco of Tourism 1978 1987 60 0-8051-0226-4 11055 Taiwan in Country 1978 1987 60 0-8051-0226-4 11055 The Legacy of L.S.B. Leakey 1978 1987 60 0-8051-0226-4 11056 Rain Forest (Collector's Edition) 1983 1987 90 0-8051-0224-8 National Geographic Special 11056 Australia's Animal Mysteries 1983 1987 90
In comparison, the modern killer whale has teeth around 8 cm (3.1 in) in height and 2.5 cm (0.98 in) in diameter. [3] Like the modern killer whale, the tooth lacks a coat of cementum. However, unlike the modern killer whale, O. paleorca had a circular tooth root as opposed to an oval, and the pulp extended more towards the back than the front. [2]