FILE - A North Atlantic right whale feeds on the surface of Cape Cod bay, March 28, 2018, off the coast of Plymouth, Mass. Th The federal government says vessels off the East Coast must slow down more often to help save the vanishing species of whale. The National Oceanic and Atmospheric Administration proposed the new rules designed to prevent the North Atlantic right whale from colliding with ships. Vessel strikes and entanglement in fishing gear are the two biggest threats to the giant animals, which number less than 340 and are falling in population. (AP Photo/Michael Dwyer, File)