Done in split seconds! Here we have the Fish Eagle - high priest of the Okavango River, getting his lunch. At this time of year, September-October, the water is so clear and it is hard to see a missed catch.
Notice the way it corrects its flight pattern after catching the fish. Then it goes back to a favourite tree or nest and has lunch. Fish Eagles can fly away with fish up to 4 pounds. If it can't fly, it will drag the fish along the surface of the river until it reaches the far shore. I have yet to see that happen.