Lindsay Bryant was getting ready for a swim when a sea lion thrashing in the water nearby caught her attention.

"At first I thought, 'Oh, he's just catching fish,'" the Nanaimo, B.C. woman said. "Then I kind of saw him struggling a bit ... so that's when I pulled out my phone."

Bryant watched this go on for about five minutes, but it wasn't until she was back at home and was able to zoom in on the footage that she realized what she had witnessed.

"I was like, 'Oh, my God. That's crazy," she said. …