Scuba diving is a great way to explore the wonders of the deep blue. Be prepared to swim alongside whale sharks, manta rays, sea turtles and even reef sharks. Do keep in mind that these are wild animals, and keeping a safe distance is a must to ensure the safety of both the animal and yourself. Always listen to your scuba diving instructor. Before diving, you will have to get a PADI diving certificate, offered by a number of resorts.