Oceans

The shark was tagged in September by researchers from non-profit OCEARCH near Nova Scotia in Canada,

The results of the study question the widely held assumption that most plastic debris at sea comes from land-based sources, the authors say.

A disease thought to be caused by a pathogen is ravaging stony coral reefs in Florida and the Caribbean.

Plastic fragments are frequently ingested by a wide range of marine animals that often mistake the substance for food.

"The presence of corals in these extreme mangrove habitats challenges our understanding of the conditions some corals are capable of living in," researcher Emma Camp said.

Explorer Kristin Hettermann has dived all over the world - but she still hasn't completed her underwater bucket list. Comprised of reefs, atolls and miraculous sights, here is her wish list.

Oceans cover 71 percent of the Earth's surface and make up more than 99 percent of the planet's livable habitat.

Around 11 percent of the world's 7.6 billion people currently live in areas less than 33 feet above sea level.

Aaaarr!

It gives us that little surge of do-gooderism, with little actual sacrifice.

The moon contains the key requirements for life.

The finding fills in the gap between volcanic eruptions and marine extinctions that had been bugging scientists.

About 70 percent of the world is covered by oceans.

Around the world, one million plastic drinking bottles are purchased every minute. Up to five trillion disposable plastic bags are used every year.

Turtles face many hazards in the water, including plastic pollution and accidental harm or death in encounters with commercial fishermen.

"[Dead zones] are a disaster waiting to happen."

Almost a third of coastlines around the world not covered in ice are sandy beaches.

Stonefish are native to coastal waters in the Indian and Pacific Oceans.

If the shipping industry were a country, it would have the sixth highest greenhouse gas emissions in the world.

Researchers found that related beluga whales returned to the same locations every year and that this behavior was passed down from generation to generation, likely from mother to calf.

A new study investigated a zone of the ocean where life is so different from the regions above and below that an entirely new category is required to describe it.

The volcanic region the produced Olympus Mons may also have been responsible for keeping Mars wet.

"I'm absolutely heartbroken."

A single gene is responsible for this extraordinary feat.

The world's oceans have absorbed around one-third of human-emitted carbon dioxide.

This dynamic duo is another deadly threat to coral reefs. But people can do something about it.

Even sites that won't be submerged could be damaged from rapid development.

It was found off the waters of Canada's Grand Manan Island.

Glitter is a menace on land and at sea.

The percentage could be greatly reduced if greenhouse gas emissions are reduced as well.