While snorkeling in shallow waters the sun is constantly beating down on you and will cause sunburn. Apply your sunscreen often. Waterproof sunscreen can still come off in the water over time. Reapply every one to two hours for maximum protection. Severe burns can occur if this precaution is not taken. Along with the physical ramifications, the enjoyment of your vacation will be cut short.
There are animals that propose some threats, although not severe. Coral is beautiful and prevalent in the ocean, but also dangerous. Coral is sharp and can cause cuts and abrasions on the skin. These cuts are slow to heal. Also if coral is damaged it takes a long time to regrow and snorkelers should be cautious to avoid injuring this animal. Another animal that can cause injury are sea urchines. They have spikes that can break off and get trapped in your skin if you brush against them. These pieces, if trapped in your skin can be painful and can get infected. Be aware of your surroundings and where you are going. You want to avoid touching dangerous animals and colliding with other participants.
Snorkeling can be enjoyed by the entire family. Preparing before hand can make it a positive experience for everyone and very safe. Being aware of the potential dangers and learning how to prevent them is the key to a successful trip. Back to the beginning
Even if snorkeling isn't considered dangerous recreational activity and, contrary to scuba diving, it doesn't require any certification at all, the same as in any water sport, some hazards and dangers do occur, which a beginner snorkeler should be aware of.