Scuba diving is a favorite under water pastime for water enthusiasts the world over, whether recreational or deep sea diving. In order to have a better, more comprehensive understanding of the training and lessons associated with receiving one's dive certification, we must first understand the terminology associated with this sport. Below are several terms to familiarize oneself with when researching dive schools and instructors.
Regulator - In Scuba diving, any device which changes pressure from one level to a lower level. It is usually attached to a mouthpiece, called the second stage regulator, which ultimately delivers oxygen to the diver allowing him or her to breathe under water.
Rebreather - A closed circuit system which filters exhaled air, then recirculates it for rebreathing by the diver. Using a rebreather requires special training and maintenance.
Dive Tables - A printed collection of dive times for specific depths, by which the divers can avoid contracting DCS which can be fatal. Decompression Sickness Dive tables are typically presented to a diver during instruction or shortly after certification.
Trimix - A mixture of helium, nitrogen and oxygen, used for very deep diving. Utilization of this mixture requires special training and certifications which involves additional, specialized dive lessons.
Cave Diving - A type of technical diving in which specialized equipment is used to enable the exploration of caves which are partially or fully filled with water.
General Dive Equipment - Scuba diving equipment typically consists of a snorkel, a mask, fins, a BCD, buoyancy control device weights, and may or may not include a wet or dry suit. A snorkel can be utilized as a backup emergency breathing device if a diver runs out of air and is forced to surface swim to a particular location though, it can be used recreationally as well.
Diving technically means to plunge headfirst into a body of water. Yet, it can also refer to the underwater sport of diving, where people trained in SCUBA (Self Contained Underwater Breathing Apparatus) use oxygen tanks and wet suits to explore reefs and caves. Students can also learn from them through courses.
Professional divers are PADI certified (Professional Association of Diving Instructors), and their job is primarily in the realm of recovery. Some are called in by law enforcement agencies to search for missing persons who may have drowned, while others seek treasure. Still others deep dive for recreational purposes, many times on vacation in tropical locales.
Either way, divers must obtain certification. They can get their licenses through training courses and lessons offered at diving schools. Snorkeling is a related underwater sport, but requires no oxygen tanks, just a tube used to breathe air above the water. Accessories needed to dive include masks, goggles, oxygen tanks, wet suits, and fins. Diving watches are also a good idea.
Diving can be a fun pastime, as many people enjoy exploring the ocean and lakes, checking out exotic fish, turtles, and even shipwrecks. Professional divers can be members of the Navy, police department, or health and safety organizations. They often work together on a professional level to achieve search and rescue missions, for example.
Many tourist locations at resorts offer diving instruction and excursions along the seashore. Gyms, schools, and local public pools may also offer regular scuba diving and deep diving instruction courses and lessons led by qualified instructors. Certification and licensing is a must. Snorkeling doesn't require a license, however.