Amphibious

We've been following Iguana Yachts for over a decade – from tenders to taxis to sprinters, all rolling to the water's edge on retractable caterpillar tracks. Now the company is looking to fly above the waves with the launch of the Iguana Foiler.

The Scoter amphibious caravan isn't as large or pretty as the Caracat cat-camper, but it boasts a slick feature. The tri-camper's built-in wheels fold into the hulls, ensuring smooth flotation while eliminating the need for a separate trailer.

If you're going on a self-propelled river journey, is it really self-propelled if someone drives you back when you're done? Perhaps not – and that's why inventor Ben Kilner created a paddleboard/bike-and-trailer combo known as the Duckleberry Finn.

The Caracat is the latest land/water RV, combining a stable, electric-propelled boat platform with camper van features like a pop-up roof and convertible furnishings. Don't let shorelines end your adventure – camp on "sea, lake and land."

Ghost Robotics' Vision 60 quadruped robot is already quite a versatile beast, capable of walking, running and even carrying a gun. Now, thanks to a third-party attachment, it can also "swim" through the water.

Although aerial drones can travel much faster than their underwater counterparts, they certainly aren't as good at gathering water-related data. The MEDUSA multi-rotor drone addresses this conundrum, by landing on the water and deploying an underwater pod.

When mines extract oil or ore from other materials, they generate liquid waste known as tailings. This waste is stored in tailings ponds, which have to be monitored – and that's where the amphibious Helix Neptune robot is designed to come in.

While we have heard of a few aerial drones that are also able to operate underwater, a new one takes that concept considerably further. Using a fish-inspired suction disc, it can hitch rides underwater – possibly even on submarines – to save power.

Reno-based Valkyrie Systems Aerospace has received a research grant from the US Air Force to further develop its remarkable HoverJet Guardian concept, which combines electric VTOL and high-speed jet cruise with amphibious and hovercraft capabilities.

Although underwater drones are capable of performing a variety of tasks, getting them to the "dive site" can still sometimes be challenging. A new system is designed to help, by using an aerial drone to transport and deploy an underwater drone.

Traditionally equipped with huge 65-inch amphibious paddle-tires and a personnel carrier, the Fat Truck family welcomes a versatile cargo hauler in the 2.8P, a high-riding pickup truck built to carry work supplies over harsh, trackless land and water.

When it comes to robots designed for traversing rough terrain, there are typically treaded and legged models. The new Tready robot, however, combines the best of both approaches, by utilizing its four treaded "flippers."