Scuba

​Last year, Robosea successfully crowdfunded its fish-like BIKI underwater drone. Now, it's testing the waters again (no pun intended) with the SeaFlyer underwater scooter. Whereas BIKI was designed for remotely exploring the depths, the SeaFlyer is for people who actually want to get wet.

A couple of months ago, Geneinno successfully Kickstarted its Titan underwater drone, which users control from above the surface. Now, the company is about to crowdfund a little something for those of us who actually want to explore the underwater world in person – the Trident underwater scooter.

Archie O'Brien had a dream of zipping below the waters off Iceland. He looked at contraptions that would pull him along underwater, but everything available proved beyond his reach. So he designed and built the Cuda underwater jetpack, which will be going into production early next year.​

​While there ARE wristwatch-style dive computers, many divers prefer something with a larger screen. Unfortunately, such devices can cost over $1,000. A group of South Korean entrepreneurs is out to change that, with an inexpensive device that converts existing smartphones into dive computers.

​While it's important for scuba divers to log the stats of their dives, it's also nice if they can learn about nearby dive sites they haven't tried before. The Mazu dive tracker is designed to help them do both.

Skiers already utilize binding systems that let them simply click their boots in and out of their skis. Well, the folks at Cetatek thought that the same sort of technology should be applied to the blades of scuba fins. The result is the aquabionic aquatic binding system (abs).

​We've probably all seen footage of scuba divers hitching rides on the backs of manta rays. Well, the AquaJet H2 brings that to mind, although it's actually modelled after airplanes. It's a winged diver propulsion vehicle, and it's currently the subject of a crowdfunding campaign.

​We've already seen head-up display (HUD) tech applied to things like ski goggles, swimming goggles and cycling glasses. Now, with its Maoi system, French company Thalatoo is bringing HUD to third-party diving masks.

Scorkl is a lightweight breathing device for quick dives. It can be topped up using a hand pump, and lets the user swim for up to 10 minutes at a time. Having reached its funding goal within four hours, the Scorkl has just ticked over AUD$1 million of backing, and is set for delivery this October.

​If you're getting bored with your video-recording Snapchat Spectacles, you may soon be able to do something new with them – take them underwater! That's just what the SeaSeeker dive mask is designed to let you do. One catch, though: you'll have to be a guest on a Royal Caribbean cruise.

We've recently been seeing an upswing in the number of underwater propulsion devices hitting the market. One of the latest to catch our eye, the WhiteShark MIX, is claimed to be the world's smallest such device that incorporates dual propellers.

​Back in 2013, we first heard about the X2 Underwater Jet Pack, which allowed users to "fly" underwater like Aquaman. Well, German inventor Un-Yong Park has created something along the same lines, but that's considerably simpler – it's called the Scubalec.