Killer whales of Eden, Australia
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The killer whales of Eden, Australia were a group of killer whales (Orcinus orca) known for their co-operation with human hunters of other whale species. They were seen near the port of Eden
Eden, New South Wales
Eden is a coastal town in the South Coast region of New South Wales, Australia. The town, south of the state capital Sydney near the border with Victoria, is located between Nullica Bay to the south and Calle Calle Bay, the northern reach of Twofold Bay, and built on undulating land adjacent to a...

 in southeastern Australia
Australia
Australia , officially the Commonwealth of Australia, is a country in the Southern Hemisphere comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands in the Indian and Pacific Oceans. It is the world's sixth-largest country by total area...

 between 1840 and 1930. A pod of killer whales, which included amongst its members a distinctive male called Old Tom, would assist whalers in hunting baleen whale
Baleen whale
The Baleen whales, also called whalebone whales or great whales, form the Mysticeti, one of two suborders of the Cetacea . Baleen whales are characterized by having baleen plates for filtering food from water, rather than having teeth. This distinguishes them from the other suborder of cetaceans,...

s. The killer whales would find target whales, shepherd them into Twofold Bay
Twofold Bay
Twofold Bay is a bay on the south coast of New South Wales, Australia, close to the border with Victoria. The bay has an area of about 30 square kilometres. Close to North Head is a conspicuous islet, Mewstone Rock. About five km south of the islet is Red Point which forms the southern headland of...

, and then alert the whalers to their presence and often help to kill the whales.

Old Tom's role was commonly to alert the human whalers to the presence of a baleen whale in the bay by breaching or tailslapping at the mouth of the Kiah River, is one of the smallest rivers, where the Davidson family had their tiny cottages. This role endeared him to the whalers and led to the idea that he was “leader of the pack,” although such a role was more likely taken by a female (as is typical among killer whales), probably the whale known as Stranger. After the harpooning, some of the killer whales would even grab the ropes in their teeth and aid the whalers in hauling. The skeleton of Old Tom is on display at the Eden Killer Whale Museum
Eden Killer Whale Museum
The Eden Killer Whale Museum is a museum in Eden, New South Wales, Australia. It was originally built to house the skeleton of the orca "Old Tom" and tell its story...

, and significant wear marks still exist on his teeth from repeatedly grabbing fast-moving ropes. In return for their help, the whalers allowed the killer whales to eat the tongue and lips of the whale before hauling it ashore, providing a rare example of mutualism between humans and killer whales. The killer whales would then also feed on the many fish and birds that would show up to pick at the smaller scraps and runoff from the fishing.

Many of the Eden killer whales were individually known and named, often after whalers who had died. Some of best known killer whales included Tom (who died 15 September 1930), Hooky, Humpy (died 1926/7), Cooper, Typee (died 1901), Jackson, Stranger, Big Ben, Young Ben, Kinscher (female), Jimmy, Sharkey, Charlie Adgery, Brierly, Albert, Youngster, Walker, Big Jack, Little Jack, Skinner and Montague.

The unique behaviour of killer whales in the area was recorded in the 1840s by whaling overseer Sir Oswald Brierly in his extensive diaries. It was recorded in numerous publications over the period and witnesses included Australian members of Parliament. The behaviour was recorded on movie film in 1910 by C.B. Jenkins and C.E. Wellings and publicly projected in Sydney, although the film is now missing and believed to have been destroyed/damaged in the 1930s when bank vaults in Sydney, where they were kept, were flooded.

The story of the Davidson family and the killer whales was dramatised by Tom Mead in the book Killers of Eden.

In 2005, the Australia Broadcasting Corporation produced a documentary, Killers of Eden, based on the book of the same name. The documentary featured numerous period photographs taken by C.E. Wellings and W.T. Hall of the phenomenon and also featured interviews with elderly eyewitnesses.

While co-operative hunting between humans and wild cetaceans in other parts of the world, the relationship between whalers and killer whales in Eden appears to be unique, despite the widespread co-occurrence of whalers and killer whales elsewhere. It seems likely that the origin of this co-operative relationship stems from the beliefs of the Nullica people, who formed a significant part of the whaling workforce and who had formed a strong spiritual relationship with the killers whales before the advent of European whaling.
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