Coast and marine winner: Storm Gull (Lesser black-backed gull), New Haven, East Sussex. (Photo by Craig Denford/British Wildlife Photography Awards)

People dressed in period costumes take part in the “Fetes Galantes” fancy dress evening at the “galerie des glaces” in the Chateau de Versailles, France on May 27, 2019. (Photo by Ludovic Marin/AFP Photo)

A boy and a serviceman pose for a picture during Marines Day celebration in the Black Sea port of Sevastopol, Crimea, November 27, 2016. (Photo by Pavel Rebrov/Reuters)

A woman poses with a grenade launcher at a weapons exhibition during festivities marking Marines Day in St.Petersburg, Russia, Saturday, November 24, 2018. (Photo by Dmitri Lovetsky/AP Photo)

Supporters react as U.S. President Donald Trump walks from Marine One to the White House in Washington, U.S., October 3, 2019. (Photo by Tom Brenner/Reuters)

Marine One with US President Joe Biden onboard takes off from the South Lawn of the White House in Washington, DC, on April 16, 2024. Biden is travelling to Scranton, Pennsylvania. (Photo by Drew Angerer/AFP Photo)

A dead green sea turtle is collected from the beach at the Khor Kalba Conservation Reserve, in the city of Kalba, on the east coast of the United Arab Emirates, Tuesday, February 1, 2022. A staggering 75% of all dead green turtles and 57% of all loggerhead turtles in Sharjah had eaten marine debris, including plastic bags, bottle caps, rope and fishing nets, a new study published in the Marine Pollution Bulletin. The study seeks to document the damage and danger of the throwaway plastic that has surged in use around the world and in the UAE, along with other marine debris. (Photo by Kamran Jebreili/AP Photo)

The sea otter (Enhydra lutris) is a marine mammal native to the coasts of the northern and eastern North Pacific Ocean. Adult sea otters typically weigh between 14 and 45 kg (31 and 99 lb), making them the heaviest members of the weasel family, but among the smallest marine mammals. Unlike most marine mammals, the sea otter's primary form of insulation is an exceptionally thick coat of fur, the densest in the animal kingdom. Although it can walk on land, the sea otter lives mostly in the ocean.