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Researchers can study ocean acidification in the lab by rearing organisms (here, Lophelia deep-sea corals) in seawater with variable pH and measuring if they grow, eat, breathe, reproduce, or develop differently.
Photo

Studying Acidification in the Lab

Researchers can study ocean acidification in the lab by rearing organisms in...
Red hot magma and ash erupt from an underwater volcano.
Photo

An Underwater Volcanic Eruption

A volcanic eruption of superheated magma (some 2,200 degrees Fahrenheit) from the...
Superheated magma slowly leaks from a crack in the seafloor.
Photo

Superheated Magma Underwater

Superheated magma, about 2,200 degrees Fahrenheit, glows orange as it slowly leaks...
In some reefs, small fishes such as this broad-barred goby protect corals by eating invading seaweeds.
Photo

Coral Goby Cleans Coral

One of the first signs of a sick coral reef is seaweed creeping across...
Map of volcanoes of Central America and within the Caribbean Sea.
Photo

Central American and Caribbean Sea Volcanoes

This map shows volcanoes of Central America and within the Caribbean Sea. The red...
Pelicans Roost at oil spill "ground zero" two years later.
Photo

Pelicans Roost at Oil Spill "Ground Zero"

Two years after the Deepwater Horizon oil spill, brown pelicans roost on a mangrove...
Rusticles on the HMS Titanic cover the hanging stern.
Photo

Bacteria Live in the Titanic Wreck

The Titanic's sinking around 100 years ago created a new underwater habitat for...
Inside the remotely operated vehicle (ROV) Jason.
Photo

Views from the ROV Jason

Inside the control van for the remotely operated vehicle (ROV) Jason, Dr....
The Johnson-Sea-Link submersible returns with a specimen of Keratoisis bamboo coral inside its collection box.
Photo

Submersible with Coral Samples

The Johnson-Sea-Link submersible reaches the ocean’s surface with a specimen of...
These deep-sea corals at the Madison-Swanson Marine Reserve are protected, along with the marine life they harbor.
Photo

Protected Deep-sea Corals

These deep-sea corals at the Madison-Swanson Marine Reserve in the Gulf of Mexico...
The Hawaii Undersea Research Laboratory’s Pisces V submersible is lowered for a dive to study deep-sea corals.
Photo

Submersible Launch

The Hawaii Undersea Research Laboratory’s Pisces V submersible is lowered for a...
Purple, pink and green corals growing underwater on a metal fence-like substrate.
Photo

The Coral Gardener

When coral reefs are damaged, they sometimes struggle to grow back because there...

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