Scientists working alongside the U.S. Coast Guard have discovered a 1,640-foot-tall (500 meters) structure that looks like an underwater volcano off the coast of Alaska. The structure may be spewing ...

Archaeologists have made an important discovery while exploring Salamis, a small island off the coast of Greece near Athens where a now-sunken city once stood. Scientists found a partially submerged ...

The waters off Yonaguni Island have carried a quiet question for nearly four decades. In 1986, a local dive tour operator noticed large stone shapes on the seabed that did not sit easily with the ...

In a remarkable discovery off the coast of Queensland, Australia, scientists have unveiled a massive underwater reef that rises 500 meters (about 1,600 feet) from the ocean floor. This towering ...

Australian researchers have succeeded in printing structures with additive-free concrete underwater without the concrete flowing away.