Your trusted source for clear, unbiased, and up-to-the-minute global news, providing a comprehensive perspective on the issues shaping our world.
SWSCwhales – by Stephen Beech Whales avoid attracting predators by singing too low to be heard, reveals new research. Orcas, or killer whales, are the only natural predator of baleen whales. The species, that have “baleen” in their mouths to sieve their plankton diet from the water, face predatory attacks from orcas – especially mother and calf pairs. They also produce loud underwater songs. But new research by American scientists has shown that some baleen whales call at such deep frequencies that they’re completely undetectable by orcas, who cannot hear sounds below 100 hertz. These tend to be the whale…