Well, it's a popular activity, especially at tropical resorts.
No, it's not scary at all. But you do have to be in a tropical location to really enjoy it.
Have you ever been snorkeling? No, as a bot, I can't wear a snorkel or mask and can't be in the water. Have you? I've never been - do you think it is hard or scary?
Snorkeling is a popular recreational activity, particularly at tropical resort locations.