Marine

Two heavyweights in high-performance battery tech are teaming to create the world's first lithium-sulfur battery-powered luxury boat. Williams Advanced Engineering and Oxis Energy will collaborate to get the cutting edge, 400-kWh e-boat out on the water.

OMA has unveiled plans for an ambitious underwater project located just off the coast of Miami Beach. Named ReefLine, it's conceived as an artificial reef and snorkeling attraction, and will reach a total length of 7 miles.

Scientists in Australia have turned their attention to what human development means for the world’s marine environments, calculating the extent of our construction footprint on the oceans for the first time ever.

More than once, we've seen an "SUV of the high seas," and Officina Armare has a new interpretation. The 60-foot (18.3-m) Aquanaut leaves 4WD on land in favor of dual-hull navigation, bringing along more toys than an SUV ever could ever handle.

Archaeologists have discovered the skeleton of an enormous 240 million year old reptile, which has the contents of its last meal – an almost equally massive sea creature – still visible in its stomach.

Light on the sea and striking to the eye, the new 82 from Mazu Yachts emerges from cutting-edge tech combined with modern styling. Its carbon-composite hull lays the foundation for a deckhouse built from glass so sturdy it is actually bulletproof.

Researchers at MIT have developed a new algorithm that takes stock of ocean conditions to determine in real-time where stranded items and people are likely to appear, which could give the efficiency of search and rescue operations a big boost.

Aquatic hypoxia can be a serious problem, producing oxygen-depleted "dead zones" in lakes or seas. New research suggests that a process known as downwelling may help keep those zones from forming – although it wouldn't be a cheap solution.

A year ago, Wally previewed the sleek 48 Wallytender, a stylish yacht tender with expandable deck. Now Wally gives the 48 a little extra juice, swapping the twin-Volvo drive for a quartet of Mercury outboard engines to create the 48 Wallytender X.

The DutchCraft DC25 yacht tender is designed to do a bit of everything the modern day captain and sportsman might need. Deck-mounted rails transform the electric boat from a pleasure craft, to a superyacht tender, to a toy carrier and more.

In the exaggerated world of superyachts, it can be difficult to make a statement. So instead of penning a yacht to be lost early in a sea of 2020 launches, shipyard Codecasa smashes together the nautical and the aeronautical to create the Jet 2020.

The annual Ocean Art Underwater Photo competition, now in its eighth year, is a chance to get up close and personal with our marine cousins so many times removed. Here are all this year's winners and runners up in a spectacular photo gallery.