New population of pygmy blue whales discovered with help of bomb detectors

Blue whales may be the biggest animals in the world, but they're also some of the hardest to find. A team of scientists are confident they've discovered a new population of pygmy blue whales, the smallest subspecies of blue whales, in the Indian Ocean. And it was the whales' powerful singing -- recorded by underwater bomb detectors -- that gave them away.

source https://www.sciencedaily.com/releases/2021/06/210608113226.htm