Follow these pointers for staying safe and being a good visitor in the underwater world.
Observe common-sense safety rules. Don't snorkel if you can't swim, stick with a buddy, use waterproof sunscreen, and keep an eye on the weather.
Practice underwater communication. Develop a couple of easy hand signals. Make sure everyone knows the signal for "I've had enough" and "I'm doing fine." You probably won't need a signal for "Hey, look!" -- that seems to come naturally.
Don't feed the fish. In natural settings, this practice is frowned upon, despite what some guidebooks might say. So don't try to lure fish your way with food.
Don't touch the coral. Many great snorkeling spots are located around coral formations. These reefs are made up of living organisms, and while you won't bother the coral by floating near or even above it, touching or standing on it will kill it.
Give sea creatures their space. If you are lucky enough to spot sea turtles or such marine mammals as dolphins or seals, remember to observe them from a distance. Never approach or touch the animals.
