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Articles on Corals

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The bamboo coral Isidella displaying bioluminescence in the Caribbean in 2009. Sönke Johnsen

From glowing corals to vomiting shrimp, animals have used bioluminescence to communicate for millions of years – here’s what scientists still don’t know about it

Dozens of animals, some on land but many in the ocean, can produce light within their bodies through chemical reactions. Scientists are still trying to understand when and why this trait developed.
Warm water expands, raising sea levels, which worsens storm surge during hurricanes. It’s only one risk from warming oceans. AP Photo/Gerald Herbert

The warming ocean is leaving coastal economies in hot water

Global ocean temperatures have been at record highs almost daily for over a year, and economies are feeling the heat.
At a depth of more than 60 metres, the gorgonians are healthy, colourful and in good condition, protected from the rise in temperature. Alexis Rosenfeld/Unesco

The deep Mediterraneen: a temporary refuge for gorgonian coral forests facing marine heat waves

In the Mediterranean, heat waves are decimating underwater forests that are essential to ecosystems. The gorgonians seem to be better able to resist in the depths, but this refuge may only be temporary.
A school of grunts on a sunken World War II German submarine in the Atlantic Ocean off North Carolina. Karen Doody/Stocktrek Images via Getty Images

Shipwrecks teem with underwater life, from microbes to sharks

When ships sink, they add artificial structures to the seafloor that can quickly become diverse, ecologically important underwater communities.
Not only do corals inhabit the cold waters of the St. Lawrence, but the species that holds the title of largest marine invertebrate on the planet is present at the entrance to the Gulf. (Fisheries and Oceans Canada)

Discover 6 fascinating animals that live at the bottom of the St. Lawrence River

In the vast St. Lawrence River, an impressive variety of animals live on the seabed. This group of organisms is called benthos or benthic invertebrates.
Mass coral bleaching in 2014 left the Coral Reef Monitoring Program monitoring site at Cheeca Rocks off the Florida Keys a blanket of white. NOAA

Corals are starting to bleach as global ocean temperatures hit record highs

Water temperatures in the 90s off Florida in July are alarming, a NOAA coral scientist writes. Scientists in several North American countries have already spotted coral bleaching off their coasts.
Researchers discovered five new species of black corals, including this Hexapathes bikofskii growing out of a nautilus shell more than 2,500 feet (760 meters) below the surface. Jeremy Horowitz

Scientists discover five new species of black corals living thousands of feet below the ocean surface near the Great Barrier Reef

Black corals provide critical habitat for many creatures that live in the dark, often barren, deep sea, and researchers are learning more about these rare corals with every dive.

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