Over the last few years, a few of us (thanks, TB4, Teri S especially) have been trying to bring more awareness of the dangers of considering Maui a harmless amusement park.
Whether it's the ocean, beaches, hiking, exploring waterfalls and such--Maui can be very dangerous and even fatal for people. Increased visitor injuries and deaths have been the upward trend the last few years, and I hope people will work to reduce them in 2018.
If you can't swim--please, please-don't go in the ocean. Just don't. It's 2018, and anyone can learn to swim! If you can't swim, you should **never** try to snorkel. Period.
Here's a link to a long thread:
https://www.tripadvisor.com/ShowTopic-g29220… with many excellent stories and tips.
Here are some others from the Top Question, too: