The U in scuba stands for Underwater.
Here's a breakdown of the acronym SCUBA, as it relates to the term coined by Dr. Christian Lambertsen in 1954:
- S - Self
- C - Contained
- U - Underwater
- B - Breathing
- A - Apparatus
This acronym, Self-Contained Underwater Breathing Apparatus, replaced Lambertsen's earlier term, the Lambertsen Amphibious Respiratory Unit (LARU).
