A few days ago, while I was photographing Long-tailed Ducks, there were two or three Common Loons swimming around the same area.
At one point, I heard a big crunching noise. Turning toward the source of the noise, I saw a Common Loon eating part of a crab that it had caught and broken apart.
It practically swallowed that part, then dipped into the water and brought up several more parts to eat.
After finishing the crab, it took a drink of water and tilted its head up to swallow it and perhaps the mashed up crab also.