From Graham Stone
Your report on two dolphin species banding together is intriguing to say the least (25 July, p 6). It brings to mind an alliance that existed between two species many years ago on the south-east coast of Australia.
Back when whaling was a primitive and dangerous artisanal enterprise, for the whalers to slaughter. All the orcas expected in return were the tongues from the killed whales.
This cooperation only existed between a particular pod of orcas and a particular human family. Rival whaling families tried to muscle in on the arrangement but without success.
Highett, Victoria, Australia
