There are five different forms of Antarctic Killer Whales that have different distributions. Type a Killer Whales are circumpolar and live offshore in ice-free water. Type B Killer Whales inhabit inshore waters of Antarctica and the Antarctic Peninsula; large type B near the pack ice; and small type B in more open waters. Type C killer whales inhabit inshore waters and pack ice and are most common in the eastern Antarctic. And with type D killer whales have been in deep, sub Antarctic waters.
Among marine mammals Killer whales are the fastest swimming marine mammals. Killer whales can swim up to speeds of 45 kph (28 mph), but probably only for a few seconds at a time. Killer whales usually cruise at much slower speeds, less than 13 kph (8 mph). They can cruise slowly for long periods of time. Killer whales usually stay below the water for 30 seconds or less when it comes to swimming near the surface. In the water killer whales are agile and maneuverable.
They are the biggest dolphins in existence and are fierce carnivorous predators, with diets that are m...
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...hales. The smallest killer whale ecotype is the Antarctic type C killer whales in which adult females average 5.2 m (17 ft.) and adult males average 5.6 m (18 ft.) in length and can reach a maximum of 6.1 m (20 ft.).”
These whales are very important to a lot of people.
“It is not fully understood why wild killer whale populations develop abnormal dorsal fins or why the observed killer whale males around New Zealand had such a high rate of dorsal fin abnormalities compared to other studied populations. Researcher theories include these observed abnormalities may be attributed to age, stress, and/or attacks from other killer whales. However, as killer whales at SeaWorld tend to spend more time at the surface working with their trainers, and many of the males have slumped or bent dorsal fins, it seems probable that time spent at the surface may be a contributing factor.”
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