see and explore under the sea, is often generalized into one word, namely 'diving'. Snorkeling is the easiest diving activity, with no age group restrictions. Everyone can snorkel as long as they use proper and adequate equipment. Usually snorkeling is still safe if done at a depth of 0 – 10 meters. SCUBA diving, which stands for self-contained underwater breathing apparatus, is a diving activity using special techniques and equipment to support deeper, longer and safer diving activities. This special technique and equipment is absolutely necessary, because scuba diving allows someone to dive to the bottom of the sea.