Amphibious

Quadruped "robot dogs" may move quite a bit like their canine counterparts on land, but they're not nearly as good at swimming (although some can walk underwater). Such is not the case with a new mini-dog-bot, however, which is an expert at doing the dog-paddle.

The M3 amphibious bridge and ferry system deploys in just 35 minutes and can support the weight of any of the main battle tanks in Europe. The system has recently been handed over to the Swedish military for the first time.

This 125-kg (276-lb) robotic ball looks – and acts – like it could've broken free from the Batpod. It's a self-balancing sphere that can chase down criminals at up to 35 km/h (22 mph) on land or water, and strike with a range of non-lethal weapons.

Traversing the width of Scotland in a canoe would be a challenge in and of itself, as would traversing it on a recumbent tricycle. Well, British adventurer Ben Kilner recently canoed the trip in one direction then triked it in the other, using the same amphibious vehicle for both legs of the journey.

Last year, BeTriton introduced an innovative ebike camping trailer that doubles as an electric boat. Now it's back with an electrified version that puts out its own motor power so cyclists can tow it via a traditional bicycle, no need for an ebike.

Researchers from Shanghai Jiao Tong University (SJTU) have unveiled a new type of amphibious vehicle that can hover like a drone, take winged flight like a plane, then dive at high speed underwater like nothing else – called the Nezha-SeaDart.

Swiss clean-energy aviation startup JEKTA has announced a partnership with fuel-cell powertrain developer ZeroAvia to extend the flight range and payload capacity of an upcoming electric amphibious passenger aircraft called the PHA-ZE 100.

An amphibian has lived up to its name, swapping out its usual green coloring for bright blue, in the first-ever record of a magnificent tree frog with this appearance. It's stunned scientists, who know they're unlikely to see this again.

Long before dinosaurs roamed the Earth, another giant predator claimed the top spot in its environment. Meet Gaiasia, a huge salamander-like creature that stalked the Permian swamps.

Textron is developing a remarkable new Surface Effect amphibious transport for the US Navy and Marines. It can carry 50 tonnes of cargo, skims the waves at 50+ knots (57+ mph, 92+ km/h), and operates in water just four feet (1.2 m) deep.

Amphibious etrike camper innovator BeTriton has realized there's some demand for a more flexible multi-use ebike/camper/boat solution. It has introduced a boat-camper trailer that adventurous cyclists can tow with their own electric bicycles.

If you've ever tried flying a drone, you'll know how hard it can be to land one in just the right place … now imagine trying to land one on a boat out at sea. The VT-Naut is designed to make things easier, by performing belly landings on the water.