This video from the USA is called Orca attack on Great White [Shark].
From National Wildlife Magazine in the USA:
Showdown at Sea
By Pamela S. Turner
What happens when great white sharks go fin-to-fin with killer whales?
“SHARK ATTACK!” Peter Pyle has heard those chilling words hundreds of times.
As a biologist studying the birds and sharks that frequent California’s Farallon Islands, he regularly witnesses the gory end of seals and sea lions ambushed by great whites.
But the attack on October 9, 1997, was different: The victim was a shark.
Earlier that morning, a fisherman spotted two killer whales—rarities around the Farallones—feeding on a sea lion.
Several hours later, Pyle heard from the captain of a tourist vessel: “Get out here fast. A killer whale’s got a shark!”
Killer whales near San Francisco: here.
Divers who witnessed a family pod of killer whales kill a great white shark in South Australia say it was “the title fight of all title fights”: here.
Orcas and eider ducks: here.
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Dear Kitty. Some blog 
Whale carcass lures 6m sharks
TORY SHEPHERD
February 03, 2007 12:15am
Article from: The Advertiser
A ROTTING whale carcass lured huge sharks into a Kangaroo Island inlet yesterday.
The 16m whale’s body washed up against the rocks on the northeastern tip of the island, near Penneshaw.
Great white sharks more than 6m long circled the area and had been feeding on the carcass. Jess Condo, 34, of Penneshaw, said he saw about four Great Whites in the area yesterday morning.
“One big one was nearly as big as our (6.1m) boat,” he said.
“They were circling around the whale.
“Then they came up to the side of the boat and brushed against it.”
The SA Museum is expected to carry out DNA testing on the whale carcass to determine what type it is, how it died and how long ago.
Joe Springall, 19, of Morphett Vale, said one of the sharks tried to attack his boat.
“All of a sudden this shark floated under the boat … he decided to have a go at the back of it,” he said. “He came up on the marlin board and took a bite. Then it stuck its head up then went back under the boat.” Acting director of Fisheries Martin Smallridge asked that people respect a 100m exclusion zone around the carcass.
http://www.news.com.au/adelaidenow/story/0,22606,21161675-5006301,00.html
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