Now, using satellite images, the plan is to locate every Atlantic and Laptev Sea Walrus, and scientists say this is essential, because climate change means these animals are under threat.

如今，这个计划旨在利用卫星图像定位每一只大西洋海象和拉普捷夫海象，科学家表示这是必要的，因为气候变化意味着这种动物受到了威胁。