Acronym for the underwater breathing apparatus utilising compressed gas supplied at a regulated pressure (5)

I believe the answer is:

scuba

(Other definitions for scuba that I've seen before include "Self-contained underwater breathing apparatus (acronym)" , "Skin-diver's device" , "breather" , "Device that lets divers breathe under water" , "Diving equipment" .)

I've seen this clue in The Mirror.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.