I was today years old when i realized you can just drift over the fast sea creatures to dive and catch them

So you know how when you dive for sea creatures and some of those shadows just take off? I've always been chasing them down to a corner to catch them. But today i learned that if you just stay at the surface of water and just tread over the bubbles, no touching the A button, they won't take off and you can just dive and catch them right away

Yes this is my first AC game