A huddle of Emperor penguins stand together on an ice floe in the Ross Sea, Dec. 27, 2023. U.S. Coast Guard Cutter Polar Star is enroute to Antarctica in support of Operation Deep Freeze, a joint service, interagency support operation for the National Science Foundation, which manages the United States Antarctic Program. (U.S. Coast Guard photo by Petty Officer 3rd Class Ryan Graves)