So the thing is im scared of the sea but not the the extent that i cant go to the beach or swimming. But to the extent that i cant put on sea goggles and/or open my eyes underwater and look aroun. I also freak out if im swimming near a boat if i see the underside of the boat i freak out or if im anywhere near the propeller i swim away like a sharks chasing me.. But i love boats and ships and i love being on them.. What is the problem? I have no past experiences that couldve triggered this fear

Oh, and I've taught people with all sorts of fears about water that have nothing to do with any particular past experience they've had. Brains are complicated, man.
Generally kids have this fear too.
Its just a matter of doing a little bit at a time, until you get use to it and the fear goes.
Going out into the big ocean then diving under water could be scary. Start small build from there.