Sperm whales change ‘vowel’ sounds when boats are nearby, scientists discover

Researchers listening off the Caribbean island of Dominica found variations in the mammals’ audible clicks when marine traffic was closeSperm whales produce a specific pattern of clicking noises when they hear the noise of boats, researchers have found. The pattern is so distinct that the scientists who identified it said they can now use it to predict when ships are nearby.Researchers from Project Ceti (the Cetacean Translation Initiative), a non-profit research organisation working to decode sperm whale communication, spent four years tuning in on the calls of 15 sperm whales off the coast of Dominica. Continue reading...