This site contains all info about Pilot whale attack.
The long-finned pilot whale has traditionally been hunted by "driving", which involves many hunters and boats gathering in a semicircle behind a pod of whales close to shore, and slowly driving them towards a bay, where they become stranded and are then slaughtered. This practice was common in both the 19th and 20th centuries. At the Faroe Islands, pilot whale hunting started at least in the 16th century, and continued into the modern times, as thousands were killed during the 1970s and 1980s. In other parts of the North Atlantic, such as Norway, West Greenland, Ireland and Cape Cod, pilot whales have also been hunted, but to a lesser extent. Iceland,. One fishery at Cape Cod harvested 2,000–3,000 whales per year during the late 19th and early 20th centuries. Newfoundland's long-finned pilot whale fishery was at its highest in 1956, but declined shortly after and is now defunct. In the Southern Hemisphere, exploitation of long-finned pilot whales has been sporadic and low. Currently, long-finned pilot whales are only hunted at the Faroe Islands and Greenland.