Eel

Eels are elongated fishes with flexible bodies and fins that commonly merge along the back and tail. They live in marine and freshwater habitats, with diets usually centered on animal prey. The familiar shape occurs across species with different sizes, colors and life histories. Some freshwater eels migrate to the sea to breed, while other eels remain marine. Sheltered spaces, sediment and rocky crevices provide cover for many species. Their winding body movements support swimming and travel through confined underwater spaces.