Apple Expands their work on an underwater communications system while introducing a next-gen underwater mask with a Heads-up-Display
Patently Apple has covered a series of Apple patents relating to a future underwater and underground communication system and special wet modes allowing users to take photos or a video using your iPhone under water (01, 02). Today the US Patent & Trademark Office published a patent application from Apple titled "Underwater Communication using Electronic Devices," that greatly expands on their March 2021 patent filing.
Source: patentlyapple.com