Orcas filmed destroying ship's rudder in shocking clip: "Surrounded"
"My first reaction was 'Please! Not again,'" the ship's captain said.
Diver comes face to face with super rare sixgill shark in shocking video
"When the shark turned for the first time and started swimming directly at me I could feel my heart skip a beat," Garrett Clement told Newsweek.
Hammerhead shark over 10ft long filmed swimming in Texas shallow: "A giant"
"It was about 7 in the morning and I heard this big ol' splash behind me," Jason Schilling said.
Woman finds mysterious ancient object on California beach
As it was later nowhere to be found, a museum asked the public for help in order to retrieve it.
Ship captain attacked by killer whales says people gearing up to shoot them
"It's so easy for these beasts to sink us if they want to," Sébastien Destremau told Newsweek. "If it was out of revenge, I think I would have been swimming."
Great white shark lurks off New Jersey coast
The shark, named Penny, was tagged by OCEARCH after making her way north from Carolina waters in recent weeks.
Ice Age volcano spewing methane discovered on Arctic seabed
"Exploring the seabed and discovering new methane insights is like finding hidden treasures," said expedition leader Stefan Buenz.
Pod of 20 killer whales attacks ship and shakes it "like a nutshell"
"Cooperative play is quite common in this species, and a whale would not be aware that a sinking ship is a danger to human's lives," an expert told Newsweek.
Dolphins and other mammals wash up dead in New Jersey
Four dolphins have washed ashore in just four days, along with other marine mammals. But the "unusual mortality event" began much earlier, says NOAA Fisheries.
Half of missing fisherman's body found after being eaten by sharks
Rescuers initially thought it was a bird on the water, but when they got close that they realized it was a human corpse.
Unbelievable moment dolphin pod is caught surfing wave in sync: "Wow"
"I have never seen so many dolphins riding one wave together like that," Jessica Blacklow told Newsweek.
Alligator shocks beachgoers after swimming ashore in Alabama
The reptile was spotted in the waters off Dauphin Island in the Gulf of Mexico.
Moment divers come face-to-face with pod of killer whales in rare encounter
"Something was different that morning," Ribka Malise said. "Out of nowhere, it happened."
Dolphin calf 'Bliss' found with spear in side saved
The dolphin calf was still swimming and feeding with its mother despite the injury.
California man films rare white killer whale named the "ghost orca"
"I honestly couldn't believe what I was seeing," Justin Crapps told Newsweek. "You could literally see him glowing under the water."
The impact of ocean temperatures hitting 40 year high
Ocean temperatures have been at an all-time high since mid-March, thought to be a result of climate change-driven temperature increases and El Nino.
Thousands of underwater volcanoes discovered by scientists
The findings will help scientists further study the seafloor and the Earth's tectonic plates.
Rare white killer whale calf seen amid orca pod
The orca, known as Frosty, was spotted in southern California for the first time in three years.
"Disbelief" as rare albino dolphin spotted swimming in Africa
Tour operator Lloyd Edwards told Newsweek that he thought he had seen it all, before spotting the albino dolphin swimming off South Africa.
Why fish poo could be vital for coral survival
Scientists have found that feces from certain fish species might act as a probiotic for coral reefs.
Diver shares how to escape a hungry shark with your bare hands: "Fearless"
The video shows why you should never splash and thrash about when you see a shark approaching.
Man loses foot after Hawaii shark attack
The surfer was rushed to hospital after an 8-foot tiger shark bit him, in what was the fourth shark attack in Hawaii this year.
Diver explores the hidden depths of WWII shipwreck off the Florida coast
"It's always very exciting to dive this wreck because you just never know what you're going to see," diver and photographer Paul Dabill told Newsweek.
Great white sharks are gathering off North Carolina
Three great white sharks have been tracked near North Carolina, just as spring breakers are expected to take to the beaches,
Photos of scarred shark reveal details of battle with orcas
Close analysis of scratches on a great white shark show that orcas inflicted them with "significant force," the study said.
Chilling moment shark enters "hunt mode" as she smells diver in ocean
The tiger shark's eyes change from dark to white as she catches a whiff of her potential prey.
New ocean within Africa could take millions of years to form
The East Africa Rift is slowly splitting apart and is expected to eventually fill with water, forming a brand new ocean.
Grounded luxury yacht damaged 19K square feet of coral reef, officials say
Over 100 coral colonies were found to have been affected, and the towing of the boat left deep "trench-like" scars for nearly 50 feet in the ocean.
Giant seaweed blob with "rotten eggs" smell could cover Florida's beaches
"This is really gotten way beyond what we've seen in the past," coastal scientist Stephen Leatherman said.
Giant seaweed blob heading towards Florida
The massive, 5,000-mile mat of sargassum seaweed is thought to have grown to over twice as wide as the continental U.S. due to fertilizer run-off via rivers.