Why do pilot whales beach themselves? Researchers look for answers after latest WA stranding

The deaths of 28 pilot whales in a mass stranding event on a Western Australian beach is the second such event in under a year. There was a similar stranding at Cheynes Beach in Albany in July 2023, where at least 90 of the mammals died. Several theories have been put forward as to why this might be happening, but the true cause remains a mystery.