A dead whale washed ashore at Point Reyes National Seashore on Christmas Eve, according to the Marine Mammal Center.

A team from the California Academy of Sciences went out to examine the whale, which is thought to be a male humpback around 30 feet long, on Christmas Day, a center spokesperson said.

A larger team from the Marine Mammal Center and the Academy is going out again today to conduct a necropsy, in an effort to determine what killed the whale.