Beads add hardly any extra weight to fishing gear and could save thousands of lives, it is claimed
Simple plastic beads could save the lives of some of the thousands of porpoises and other cetaceans that get caught in fishing nets each year, scientists say.
Harbour porpoises use echolocation to find their prey and for orientation. However, their acoustic signals cannot pick up the mesh of a gillnet, and as a result they often become trapped.
