Video: Group of Sea Lions Chases After Boat, Make ‘Zombie’ Sounds

A sea lion is pictured on the beach in Sandfly Bay near Dunedin, New Zealand, on Sept. 21, 2011. Martin Bureau/AFP/Getty Images

Researchers in Alaska captured the moment a raft of sea lions pursued their boat.

According to Yahoo News, the researchers were on a marine bird survey near Alaska’s Katmai National Park and Preserve when they spotted the sea mammals.