"Scuba" stands for: Self-Contained Underwater Breathing Apparatus.
Let’s break it down:
Self-Contained – Everything you need to breathe is carried with you (no tubes to the surface).
Underwater – It's used while you're underwater.
Breathing Apparatus – The equipment that lets you breathe (like the air tank and mouthpiece).
So, scuba means a system that lets you breathe underwater by carrying your own air supply. This is what makes scuba diving possible—divers wear tanks on their backs and breathe through a regulator while exploring underwater.
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