It's a thing of beauty, nature is like a puzzle, every piece fits perfectly

One of the key things that I just recently realized is how terrestrial predators only need to move in a two dimensional space, whereas an otter hunting a fish has to move in a three dimensional body. There's a whole new dimension introduced to the game. Diving takes a lot of practice and skill in itself, but then imagine also keeping track of a fast moving fish that's doing its best to get away from you. AND to top it off being fast and nimble enough to catch it, all while you're a land animal who hated the water before being taught to swim. Otters really are the kings of the water and the kings of hunting.