Underwater

"Grandpa" the wolf eel enjoyed a rare moment of affection with a local diver he has known for 18 years.

"This is the first time anyone has used the internet underwater completely wirelessly," said the lead author of a new academic paper detailing the technology, associate professor Basem Shihada.

Venice Mayor Luigi Brugnaro announced on Tuesday evening that he would declare the city in a state of emergency due to the flooding.

Snapchat users have discovered images of what appears to be a plane underwater off Ocean Beach Pier in San Diego. Find out what it's all about, here.

Some 5,000 feet beneath the surface of the sea lies a world of weird and wonderful species.

Campaigners are calling for the zoo to be shut down.

"You have to be alive to spend that $1 million," Heidi Klum told them.

Some experts say the U.S. should pay more attention to Chinese government-sponsored hackers.

Two wrecks discovered in 2015 have been identified as coal-trading ships, rather than the plane that went missing in 2014 with 239 passengers.

Bioluminescence isn't as uncommon as you think.

Undersea lines across the Atlantic are crucial for communication and trillion-dollar trade, but Russian ships have reportedly been moving near known cable routes.

Entrepreneurs are pursuing some eyebrow-raising possibilities.

Scientists have developed a new technique to help them find objects that have crashed into the sea.

A Norwegian firm claimed to have sold bullets that can travel underwater to several countries earlier this year.

Two amateur divers found 1,600-year-old Roman treasure off Israel's coast.

The arrest is the latest example of economic espionage, which the FBI says has increased by over 50 percent.

A new underwater drone explores the depths of the Loch Ness in Scotland.

A Paris aquarium and Airbnb are running a contest for people to spend the night in a shark tank.

The CRACUNS was developed by researchers at John Hopkins University and named after the mythical Kraken.

Buildings trembled throughout the country, but a tsunami alert hasn't been issued.