Orcas, which also face human threats, have a softer image (the 1993 film "Free Willy" helped) due to their intelligence and accessibility at water parks.īite marks on the carcasses in South Africa were inflicted by orcas seen recently near Cape Town, conservationists said. Rare autopsies conducted on carcasses that washed ashore show how orcas dominate the marine food chain at the expense of great white sharks, whose ferocious reputation (thanks partly to the 1975 movie "Jaws") belies their vulnerability to shark nets, fishing, poaching, pollution-and the biggest member of the dolphin family.
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