People are pushing 900ft with dual rebreathers, 600ft is deep.. 300ft is common.

I do down to 140 no problem I dont even blink. Note Normoxic Trimix allows you to go to 200ft, Trimix Cert lets you go way deeper.

And yes these two are my dive buddies and good friends. :)

Oops! I transposed depth numbers in last post.
55 meters = 180 feet. Yes. 130 or 140 is usually advised, but I just Googled "rebreather 600 feet" and did find a couple of forums on the extreme depth subject. One quote: "divable to at least 100m (330 ft) straight out of the box" and then some talk about changes of the orifices getting down to 600+ft. I assume larger. Gas must get pretty syrupy at those depths.

It is 180 feet, not 108. But in all honestly it doesnt seem that deep in the video. I might be wrong but, unless the water in Maui is crystal clear (and it doesnt look that way), from 54 meters down you don't see surface light so bright as it is shown in the video.