Scuba

If you're looking for a hands-free wearable electric boost while snorkeling or scuba diving, the Jetdive Pro should definitely fit the bill. It's not the first product of its kind, but it is claimed to be the best in several key ways.

Because GPS doesn't work underwater, divers usually can't track their real-time position on a digital map. The new Diver Navigation System (DNS) gets around that problem, however, using both floating and wearable acoustic transponders.

Scuba air cylinders are typically big heavy things that can can't easily be carried long distances. The Smaco S700MAX system is different, in that it incorporates a compact cylinder that snugs into a custom BCD which doubles as a backpack.

Six years ago we told you about the Scorkl, a mini compressed air tank that allows users to breathe underwater for up to 10 minutes. For easier refills, the 2.0 version can now be ordered with an electric air compressor and a "battery pack."

Due to factors such as murky water and limited peripheral vision, it can be hard for scuba divers to keep track of where their fellow divers are at all times. A newly developed smartwatch app, however, may soon make it much easier for them to do so.

Scooters have become one of the most popular gadgets for watersport enthusiasts, and the latest out to do the paddling for you is a compact pocket rocket from Japanese makers Surando Tech. Despite its size, it punches above its weight in the water.

Ordinarily, farsighted scuba divers have to either get a prescription-glass bifocal mask, or apply adhesive magnifying lenses to their existing mask. Now there's a new alternative, in the form of removable underwater "reading glasses."

Underwater scooters are nothing new, although most of them are devices which users must hold in front of themselves. The Seakool D2 is different in that it's worn around the waist, keeping the user's hands free and their view unobstructed.

Scuba divers are typically loaded down with quite a bit of heavy gear. The Avelo System is designed to help in that regard, as it moves the functionality of the buoyancy compensator into the air tank, making the former unnecessary.

When it comes to communicating with one another while underwater, scuba divers typically use either hand signals or writing boards … both of which have limitations. Soon, however, they could be utilizing an app on their existing smartphone.

Not content with boasting the world's tallest building, the world's largest mall and a host of other forward-thinking ventures that include flying taxis and firefighters with jetpacks, Dubai has now opened the deepest swimming pool in the world.

There are already devices that allow smartphones to double either as dive computers, or as underwater cameras. The currently crowdfunding HotDive, however, does both.