https://techcrunch.com/2022/11/28/oceanic-plus-apple-watch-ultra-scuba-diving/

In September, Apple launched the Apple Watch Ultra, which is not only waterproof to 100 meters (330 feet) in depth, but can also be used as a dive computer with the help of a companion app developed by Huish Outdoors. We took it into the deep blue sea to test it out.

I’ve been an enthusiastic scuba diver for more than a decade. I’ve logged hundreds of dives, and I’ve earned a handful of qualifications over the years: I’m an SSI Rescue Diver, an SSI Master Diver and a PADI Divemaster; I’ve also completed a bunch of specialty training over the years. If that means nothing to you, suffice it to say I’m trained in dive-specific first aid, and if you are diving with me, I can (at least in theory) save your life if something goes wrong. I’m also qualified to lead dive tours.