Assistant Marine Mammal Stranding Coordinator, Justin Greenman, right, and Research Biologist Jim Carretta, both with the National Marine Fisheries Service, start to cut into the head of a dead fin whale that recently washed up on the beach at Border Field State Park in San Diego on Thursday, May 29, 2014. They and other marine mammal specialist are interested in looking inside the whale's skull, especially the ears. The researchers want to gain better understanding of how a whale hears. (AP Photo/U-T San Diego, Hayne Palmour IV)