Hawaii Beaches have warm clear blue water and many coral reef areas which means great Snorkeling and Scuba Diving conditions. Hawaii water temperature varies only about five degrees a year and do not contain cloudy-water producing silt. Its easy to Snorkel in Hawaii. You can purchase or rent the simple Snorkeling gear of mask, tube and fins. If you have Snorkel gear at home you might want to bring it if you have the room in your baggage. Hawaii Scuba Diving on the other hand is more expensive and has specific requirements as far as certification. The only way for a beginner to Scuba Dive in Hawaii is to take an introductory to diving class. A qualified diving instructor will be next to you as you learn the basics of Scuba Diving in a shallow reef area.