These birds are lucky there are no sharks or orcas in those dark waters, so they won't be eaten alive. But there is a white dolphin that does not need a meaty snack but wants to pester the seagulls for fun, so it pokes them from underneath the water. The birds are not too happy with that, but they can do nothing to stop it. You can almost hear the sea creature laughing - and, of course, it had a lot of fun.