The tunnel caverns, arches and lava tubes are excellent venues for picture taking or setting a night dive with Manta Rays or a blue water dive to search for the spotted and bottlenose dolphins, pygmy killer whales, pilot whales and whale sharks. It is recommended to take a guide if you are planning to dive in Hilo side of the island. Buying high-end fins are not for everyone, especially for beginners, because beginners may not be used to exert a lot of effort in their leg muscles. To use fins, the full foot fins doesn t need special preparations, you can easily slide your foot inside full foot fins. In adjustable strap, however, you need to pre adjust your fins before entering the water. Planning Your Scuba Diving Trip in Grand Cayman Do you want to get out of your usual dive site and visit at least one exotic dive location? Are you and your dive buddy having difficulty in which dive spot you want to go to? If you answered yes to any of these questions then Grand Cayman diving is for you. When you are going to buy a scuba mask, you should choose a mask with tempered glass lens plate. This is because tempered glass is less likely to shatter into fine, hazardous slivers. Another feature you should look for is that it should have a comfortable skirt with a close fit to your face and provides a good seal. This is a common misconception and you should know that scuba tanks are never filled with pure oxygen. This is because, ironically, this gas that gives people life is lethal when breathed under pressure. This can cause oxygen toxicity and can cause instant death. Scuba tanks are often filled with air, similar to what we breathe on the surface, that are compressed to about 250 bar or 3000 pounds per square inch. Bay Islands consists of the islands of Guanaja, Roatan, Utila, and to over 60 islets that sits atop on the world s second biggest barrier reef. With its great coral reefs along the edges, Bay Islands is the right place for you to scuba dive. Because of its huge reef system, you can find different kinds of corals and sponges.