Sweden's submarines are small and quiet, perfect for the Baltic Sea that many NATO allies share with Russia.

Submarine cables are long, thick wires that lie deep under the sea. These cables carry nearly all of the world’s internet and ...

The wreck of a German steamship sunk at the end of World War II found by divers, with the crates on board the submerged vessel holding the precious furnishings of the lost 18th century Amber Room, ...