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