A fiery force beneath the ocean is reshaping Tonga’s Home Reef, growing an island through eruptions over the past few years.

The USS Becuna submarine sank 3,888 tons of shipping and earned four battle stars in World War II.

A red-hot lava flow two miles long has been attracting crowds to the slopes of Mount Etna on the island of Sicily, Italy.

Much has been written about suspected sabotage of undersea cables in the Baltic Sea, but a UN official said that fishing ...

Monument Geyser Basin is one of the most unique areas of Yellowstone National Park. Its ancient undersea wasteland at 7,300 ...