AP Photo/Becky Bohrer

With Mount Edgecumbe in the background, a sea lion pops its head out of the water next to a buoy crowded with other sea lions in this 2018 file photo. A swarm of hundreds of small earthquakes were reported near the Mount Edgecumbe volcano 15 miles west of Sitka. The reason for the swarm is not known, officials at the Alaska Volcano Observatory said.