Actually, I do go on the water. I love kayaking. I don’t love swans, especially now, as a swan has taken one of our own (from the BBC):

Mr Hensley tried to swim to shore but eyewitnesses told the sheriff’s investigators the swan appeared to have actively blocked him.

Killer Swan

By Crom, they're after the children!

“I find myself still scratching my head,” says Sheriff Dart. “This truly is one of the ones that keeps you from saying ‘I’ve seen everything now.'”

I’ve seen the Canadian geese go after passersby, especially when their young are around, and I’ve seen a swan chasing people, but never thought they’d consider murder. (Canadian geese, however, are renown for their anti-human suicide attacks, showing no concern for military or civilian targets.)