Witnesses watched a man disappear into the James River at Belle Isle on Saturday. He later died after being underwater for more than 20 minutes, according to sources.

Maurene Calago was posing underwater for photos in the Philippines when a whale shark approached unnoticed and nudged her arm ...

Iran says it has placed mines in the Straight of Hormuz to discourage independent traffic. How dangerous are naval mines, and what can be done to clear them?

Few people beyond the Prime Minister know exactly where the Vanguard submarine is at any one time, as it has to be one of the ...

Animation shows Touska cargo ship after Trump says US has taken custody of vessel and troops blow hole in Iranian cargo ship ...

Life underwater runs on cramped space, shared routines, and constant adaptation. Submariners sleep in coffin-like racks, ...

The US military has deployed robotic systems to clear sea mines in the Strait of Hormuz following a ceasefire agreement ...

US Marines have seized an Iranian-flagged cargo ship near the Hormuz Strait, President Trump has said. Earlier, he threatened to destroy every bridge and power plant in Iran if no peace deal was ...

The world’s most vital oil artery is now a hidden battlefield beneath the waves. As tensions rise in the Strait of Hormuz, ...

After Progressive activist and organizer Analilia Mejia soundly defeated her Republican opponent in the special election for ...

Retired Marine Col. Steve Ganyard told ABC's "This Week" that resolving the situation in the Persian Gulf is more complicated ...

Quick Take The Weddell seal produces multiple distinct calls and ultrasonic frequencies, reaching 50 kHz, a level humans ...