By the mid-twentieth century, high pressure gas cylinders were available and another system for scuba had emerged: open-circuit demand scuba, where the diver is supplied with gas on demand, and their exhaled breath is vented directly into the water.
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While recreational scuba diving is all about having fun and discovering underwater worlds, professional scuba diving focuses on work and research, often requiring more advanced skills and knowledge.
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Scuba diving involves underwater exploration using a Self-Contained Underwater Breathing Apparatus (SCUBA). This equipment allows divers to breathe and move freely underwater, offering a unique way to experience the ocean’s wonders.
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SCUBA merupakan singkatan dari Self-Contained Underwater Breathing Apparatus atau Perangkat Bernapas Bawah Air yang Berdiri Sendiri. Inisial ini berasal dari 1939 di Navy AS untuk menunjuk ke alat pernapasan penyelam militer AS.