On our first boating trip every season we visit the same bay/fjord to catch shrimp. It is also consistently the best location for photographing sea otters. The weather was horrible this year and we didn't spend as much time there as we typically do. But I still managed a shot or two.
Nikon D810, 200-500mm@500mm, handheld from kayak
Best viewed in the light box.
1) Mom and pup in nearly perfect water conditions. And IMO the water makes/breaks shots of otters. The color here is natural. Saturation was not cranked up in post. The brilliant blue is a result of ultra fine dust particles in the water. This is called "glacial bloom".
2) Otters just being otters. The darker of the two is a youngster, presumably the near grown pup of the other which was protectively holding it.