Why are my eyes so easily irritated by salt water?

every single time I go in the ocean my eyes get REALLY red and they burn like crazy! and I keep my eyes shut when a wave is coming. I literally shut them extremely tight just to make sure water doesn't get in. but somehow it finds a way when I open them again. but none of my friends have this problem. it might bother them a tiny bit and it goes away. but I actually have to wait a minute or so for the stinging to go away. any idea why this happens to just my eyes? any help is appreciated.. thanks!