Eurasian river otter (Lutra lutra) eating a male lumpsucker (Cyclopterus lumpus) fish, also known as a sea hen or scarclagger. Hebrides, Scotland

Eurasian river otter (Lutra lutra) among seaweed and rocks. Hebrides, Scotland

Eurasian river otter (Lutra lutra). Hebrides, Scotland

Eurasian river otter (Lutra lutra) eating a large crab. Large fish and crabs are difficult to constrain and eat in the water so are often brought ashore. Otters will sometimes swim realtively long distances in order to do so. Hebrides, Scotland

Eurasian river otter (Lutra lutra). Otters in western Scotland have adapted well to life in a marine environment, though proximity to sources of fresh water is essential. Hebrides, Scotland

Eurasian river otter (Lutra lutra). Otters in western Scotland have adapted well to life in a marine environment, though proximity to sources of fresh water is essential. Hebrides, Scotland

Eurasian river otter (Lutra lutra) in the marine environment to which they have adapted so successfully. Hebrides, Scotland.

Eurasian river otter (Lutra lutra). With her only cub nearby, this mother is displaying great alertness. Hebrides, Scotland

Eurasian river otter (Lutra lutra). Hebrides, Scotland

Eurasian river otter (Lutra lutra) eating a male lumpsucker (Cyclopterus lumpus) fish, also known as a sea hen or scarclagger. Hebrides, Scotland

Eurasian river otter (Lutra lutra) foraging in and among the seaweed. Otters on Scotland's west coast and islands have adapted well to making a living in the marine environment. Hebrides, Scotland

Eurasian river otter (Lutra lutra) eating fish. Otters have adapted well to the marine environment but require sources of fresh water to drink and to clean fur. Hebrides, Scotland

Eurasian river otter (Lutra lutra) eating fish. Hebrides, Scotland