Some years ago, I went on a cruise to Alaska. One of our excursions was kayaking on a glacial lake. Bald eagles were perched all around the perimeter of the lake. From a distance they looked like bright golf balls in the trees.
One of them swooped down and grabbed a fish, but it was too large for him to fly with. He was about a hundred yards from shore. He actually swam to shore using his wings as oars. It was incredible to watch.
Our guide told us that it's a common way for Bald Eagles to die. They will grab a fish that's too large, and it will pull them under and drown them.