If I fell into the sea, would you catch me?

"A shame, he thought. Dying from a stupid fall on a calm and lazy afternoon. Drowning without anyone knowing. That really sucks".

Or Buggy and Shanks are both talking on the deck, Shanks goes to help Rayleigh with something and when he comes back, Buggy is gone. Actually he's not, he's still here, just sinking in the sea with no way of calling for help.