Sunny Jim's Sea Cave in the La Jolla neighborhood of San Diego, California, has been an ocean destination for 123 years.

Ukraine and the U.S. agreed to implement a full 30-day ceasefire. Russia declined to do so, issuing a list of demands instead ...

This summer will see record low Arctic ice and Russia has stolen a march on militarizing the strategic region.

A mysterious family drama involving two murders, a multimillion-dollar inheritance and a shocking suspect. Watch the all-new "20/20." ...

Nathan Carman was rescued at sea in 2016, but his mother Linda Carman was never found. He was suspected in her death.

World War III can yet be won. Team Trump still holds all of the winning cards. It is time Trump collectively harnessed them ...

Opponents say the mansion's proposed swimming pool would sit too close to the beach for comfort and disturb the sea turtle ...

Toxic algae off the coast of Southern California is killing or sickening hundreds of sea lions, dolphins and seabirds, while ...

And then the key crew members were also like, ‘Cool, we’re down to do something.’ The next person I called was Gideon.” ...

Teens and adults are invited to read “The House in the Cerulean Sea” by TJ Klune and meet the author on Thursday, April 24.

Diplomats from more than 30 nations have criticized a proposal that could allow the start of seabed mining by 2027.