>>44271495By that I mean if you were caught off guard by one, which it's always a possibility.
For example, what if you were in your day off and decided to go to the beach for a change? You arrive to the place, take your clothes off, put on your little trunks, and take a dip in the water.
A Primarina could be diving near you and think it'd be funny to toy with a weak human boy for a while. Your sluggish movements in water along with your lack of strength would render you helpless to them until they get bored of you... if that ever happens.
Sure, you can endure their charms for a while as long as you keep your distance. However, if they're shoving their maws right into your ear while they sing, I think your chances to resist will be drastically reduced. Combine that with the fact that they'll likely also be groping you means you're a goner.