Coral Reefs

The habitats of these seahorses have declined by up to 90 percent in some areas, leading conservationists to release juveniles into seahorse "hotels".

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.

The enormous mat of sargassum seaweed is thought to span 5,000 miles and weigh about 13 million tons.

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.

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.

The NOAA scientists found the otherworldly blob 1,400 feet below the surface of the Caribbean Sea.

Researchers have discovered remains of a massive coral reef in a desert plain they previously thought was featureless.

Scientists have studied the relationship between corals, their algae, and the trail of oxygen flow.

The viral video shows the huge ray leaping from the water, scaring away its companion with a big splash.

Innovative artificial coral from startup Reefy was transported by divers in an aquarium to help bolster coral reef restoration.

Scientists are fighting for ways to reverse the reduction of coral reefs across the globe and think 3D printing could help bring them back.

Other reefs in deeper waters may also exist and offer opportunities for conservation.

Hundreds of Chinese fishing ships have anchored in the Spratlys region and dumped human waste, sewage, and wastewater, a U.S. expert said Monday.

This was a bumper year for breakthroughs in every scientific field, including astronomy and physics.

The findings are some rare good news for corals around the world, which are facing numerous severe threats.

"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.

Ambitious reef-wide health check could provide valuable information to save the largest barrier reef.

Celebrate World Reef Day 2019 in Style at these beautiful beaches.

"Global warming is happening. As a society, we need to understand how species and ecosystems will respond to such change," said study author Lewis Jones.

The vermin are starving complex ecosystems of a vital but surprising ingredient: bird droppings.

Sculptures at Florida's new underwater museum of art are made of natural materials and will work like artificial reefs, housing sea life, on an otherwise barren ocean floor.

Rising water temperatures are killing corals—but researchers think we can stop the die-off.

If there is any silver lining to these events, it may be that many of the disturbances killing corals are acute: They occur just for a short period of time and then disappear, potentially allowing corals to recover before the next disturbance.

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.

"There's just no time for these systems to recover."

More than 500 million people around the world rely on coral reefs directly for their livelihood, income and food.

The foreboding creature has an equally foreboding namesake.

Unprecedented amounts of coral reef bleaching destroyed the coasts of Hawaii, and it will probably keep getting worse.

NOAA experts predict coral reefs in Florida, Hawaii and the Caribbean will be heavily impacted by global warming effects as soon as this summer.