Getting a chance to witness the wonders of the world is a rare privilege. How much more if you will spend your vacation underwater? You just can t imagine the enchanting beauty of the coral reefs and the aquatic creatures gliding in the sea. If you will just have the chance to take a glimpse of a real paradise, surely you will immediately grab it. This is because scuba diving can be dangerous if you don t know anything about it. For instance, you need to know about underwater pressure and how to cope with it. The pressure itself can be dangerous if you don t know how to equalize. It can lead to discomfort in the ear and sometimes may relatively cause injuries in your ear drum. This is because you lessen the oxygen and nitrogen content in the mix and are replaced by helium. However, if you want to dive deep than conventional diving, this requires special training and also a lot of discipline before you can do this. Always remember that diving is a fun hobby and will never be dangerous if you follow all the things you have learned in your scuba diving lessons. This is often used by the divers in order to conserve the air found in the tanks. 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. The instructor will now send a form to the diving agency, such as PADI and NAUI, which certifies that the diver passed all the requirements as a diver on a particular level. The agency in turn will send a Certification Card or C-Card to the diver who just passed all the standard requirements imposed by the agency. 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.