You can look this up on wikipedia you know: https://en.wikipedia.org/wiki/Deep_diving
"The open-sea diving depth record was achieved in 1988 by a team of COMEX and French Navy divers who performed pipeline connection exercises at a depth of 534 metres (1,750 ft) in the Mediterranean Sea as part of the "Hydra 8" programme employing heliox and hydrox."
Sounds like 80 meters is cake walk for any modern naval institution.
An 80 meter bounce dive is a cake walk for anyone with advanced technical dive training. Any motivated middle-class person could acquire the necessary skills and equipment to do it safely in a few years of steady effort. It doesn't require anything like the complex saturation diving procedures and equipment used by COMEX or certain naval institutions.