- Learn about water and diving conditions. Decide whether you are going for a boat or shore diving. - Remember that tropical reef biodiversity is similar to a tropical jungle. The only difference though is that when you are exploring the world underwater, your gear is rendered weightless. Scuba diving underwater trips is exciting and you can select from different possible trips underwater - Decide what you wanted to explore or view underwater. It is important that you are able to answer questions like this for you to enjoy diving more. You should not be alarmed when scuba diving. Every time you dive, you must have a buddy or a companion who will stay beside you and will guard you as you guard them. If you are with someone who has a problem, it is your responsibility to look for someone who will help him or her. 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. Sometimes, scuba tanks are filled with special mixtures for special diving. You can also have a tank filled with NITROX that will enable a diver to have longer bottom time but shallower dives. Fins Like fish, it will allow you to swim under the sea with lesser effort to take. Divers who are only using their hands in swimming sometimes grasp for breath especially for very long distance. Important features of fins are pockets suited for your feet and two blades for propulsion. Scuba tanks This is where you store enough air for your breathing. However, if you are certified as an advanced open water diver, you can dive at dive sites that have a minimum certification level of open water and advanced open water. When planning a trip to the Grand Cayman, you need to make a checklist of all the equipments you will bring. You should also check if all of your equipments are working properly to ensure a smooth sailing vacation in the Grand Cayman. The water current can give you the opportunity to dive within 15 feet from reefs up to diving 200 feet on sea mounds without getting swept by. The largest of Bay Islands is Roatan which is about 42 miles long and 2 miles wide. Roatan s northern and southern reefs is home of about 40 dive sites that can give both beginners and professional divers the chance to explore the plummeting walls, caverns, and crevices.