Adjustable strap fins have foot pockets that are open at the back and are equipped with adjustable heel straps while the full foot fins have foot pockets encloses the heel. Most scuba divers prefer adjustable fins because then can be worn with wet suit boots and most high powered models of fins are available in adjustable strap fins. The warm waters surrounding Hawaii are haven to incredible number of fish, mammal and coral species. There is an approximate thirty percent of common reef fish found in Hawaii due to the archipelago s isolation. That is why Hawaii became a great and popular place for scuba diving with some of the best dive sites in the world. A commercial diver usually works in oil rigs, ships, and other industrial vessels that require underwater jobs, such as welding, cleaning a ships hull, or drilling. This is a particularly dangerous diving job as there are so many hazards working with the heavy equipments used in industrial vessels. Industrial divers are also used in salvage operations and other underwater jobs that require working with hazardous equipments, and explosives If you want a rewarding career, scuba diving is for you. It will teach you how to read the depth gauge, the pressure gauge and also teach you how to navigate underwater by using a compass. The instructor will also teach you how to control your buoyancy in order to avoid accidentally damaging the corals. The instructor will also teach you about hand signals that are used for communication underwater. However, you need to be a certified scuba diver in order to let that Grand Cayman dive operators allow you to dive. If you don t have a certification, you can get certified by dive centers operating in Grand Cayman. They have certified instructors that can get you certified in no time. Grand Cayman has a lot of dive sites with different certification requirements. They are acquainted with the nature of scuba diving in Thailand first before getting into it. Here are some of the features in some of the scuba diving resorts in Thailand: It has volley of beaches that attracts the divers throughout the year. It has the vibrant blue beaches that are particularly apparent during the winter season.