A free diver is a person who practices the sport of diving without the use of breathing apparatus, relying solely on holding their breath. This activity allows divers to explore underwater environments, such as coral reefs and marine life, while experiencing the tranquility of the ocean. Free diving can be done recreationally or competitively, with various disciplines that test depth, distance, and time. Free diving requires training to improve breath-holding capacity and underwater techniques. Safety is crucial, as divers often work in teams to monitor each other. The sport is closely related to apnea, which is the practice of breath-holding, and is popular among those interested in scuba diving and marine biology.