【英语时差8,16】海獭之病（上）（在线收听）

Unfortunately, a lot of sea otters off the coast of California are dying off, and the problem may be Mr Allfor. A four-year study was recently concluded by wildlife vet Melissa Miller at the California Department of Fish and Game. He tried to find what is at the root of a sea otter sickness that has been causing the number of sea otters to drop dangerously low. He found that sea otters are being infected by toxoplasma gondii.