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Whale sharks' lifespans are estimated to be between 80 and 130 years, based on studies of their vertebral growth bands and the growth rates of free-swimming sharks. [9] [10] [11] Whale sharks have very large mouths and are filter feeders, which is a feeding mode that occurs in only two other sharks, the megamouth shark and the basking shark.
An attack on a strap-toothed whale. Orcas (or killer whales) are large, powerful aquatic apex predators. There have been incidents where orcas were perceived to attack humans in the wild, but such attacks are less common than those by captive orcas. [1] In captivity, there have been several non-fatal and four fatal attacks on humans since the ...
Between 1950 and 2008, 352 tiger sharks and 577 great white sharks were killed in the nets in New South Wales. Also during this period, 15,135 marine animals were killed in the nets, including whales, turtles, rays, dolphins, and dugongs. [72]
He says: “People are very recent on the planet compared to sharks. Humans, 2 million years, even the ancestor of chimps and ourselves only takes it back to 6 million years ago, while sharks go ...
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On average, an adult killer whale in the wild may eat about three to four percent of their body weight daily, [82] or as much as 227 kg (500 lb) of food for a six-ton male. Their diet in the wild depends on what is available, and may include fish, walruses, seals, sea lions, penguins, squid, sea turtles, sharks and whales. [83]
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They also eat other sharks (including adult sandbar sharks (Carcharhinus plumbeus)), as well as rays, and sometimes even other tiger sharks. [5] [37] Due to high risk of predation, dolphins often avoid regions inhabited by tiger sharks. [45] [46] Injured or ailing whales may also be attacked and eaten.