Dan Metcalfe is waiting for Guinness World Records to certify his swim—more than 17,000 feet underwater—as the longest within his disability category, along with two other record attempts.

Hundreds of ballast stones were removed from the side of the shipwreck, exposing the wooden frames and planking of the *North America*. This will accelerate the ship’s degradation.

Melting sea ice is accelerating its uptake of carbon dioxide, driving a chemical change in the ocean that is a severe threat to life in the ocean.

Maria Sotek is overseeing a rescue mission for South Ari Atoll’s Maamigili Reef, which was buried with sand during construction of an airport runway on Maamigili Island.

The minute fish about the size of your fingernail has the highest expression levels of antifreeze proteins of scientists have ever seen.

A survey of more than 60 fishing communities found no confirmed sightings of the mammal, which has lived in Chinese waters for hundreds of years.

What is likely a single-mast cargo ship sits in a predominantly saltwater stretch of the river Trave and was first spotted by sonar in 2020.

New discoveries are appearing in the wake of melting mountain ice, shrinking lakes and falling water levels.

The Ocean Voyages Institute retrieved 211,644 pounds of discarded fishing gear, consumer plastics and other waste—some of which had been floating for decades.