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Participants in the challenge must first set a compass bearing in the direction they are headed to properly navigate underwater.
Young Voices

SCUBAnauts Splitting The Sign

I am a member of SCUBAnauts International, an organization for young people...
May 2015
Pink crustose algae covers the surface of a rock.
Personal Perspectives

Microbes Help Corals Pick a Home and Settle Down

Bacteria are everywhere in the ocean. They live in the water, on virtually every...
July 2014
This queen parrotfish scrapes algae from Caribbean reefs with its parrot-like beak.
Personal Perspectives

From Despair to Repair: Protecting Parrotfish Can Help Bring Back Caribbean Coral Reefs

Reef biologists over a certain age are haunted by memories of what glorious places...
July 2014
Many species of pink coralline algae, which cements coral reefs together, cover a reef surface in the Southern Line Islands.
Personal Perspectives

Coralline Algae: The Unsung Architects of Coral Reefs

Stare at a tide pool and you will often see a crust of pink coating the bottom. No,...
January 2014
In 2011, storms and lack of ice-cover due to a warmer winter climate resulted in hundreds of seal pups being washed up on the shore of Prince Edward Island. Like many, this young seal faced an uncertain future. See more Nature's Best Photos.
Personal Perspectives

Ice-Loving Seals and the Loss of Sea Ice

The threat that climate change poses to polar bears has received a lot of...
September 2013
Convict surgeonfish are the roaming sheep of the reef but, instead of noshing on grass, they feed on algae.
Personal Perspectives

Helpful Herbivores

When snorkeling in the Kahekili Herbivore Fisheries Management Area (KHFMA) in West...
June 2013
This orange boring sponge (Cliona varians) overgrows several coral species at Panama's Smithsonian Tropical Studies Institute.
Personal Perspectives

Ocean Acidification Excites Boring Sponges

Boring sponges get a bad rap. Their own name betrays them, announcing to the world...
March 2013
A whale shark swims with a diver off the coast of East Africa.
Personal Perspectives

The Big Five of the Ocean: Exploring the Waters of East Africa

When we think "Africa," we think of the "Big Five"—lions, elephants, leopards,...
November 2012
Colorful corals are disappearing in the Great Barrier Reef.
Personal Perspectives

The Great Barrier Reef – Going, Going, Gone???

Australia’s Great Barrier Reef (or the GBR as it is known to reef aficionados)...
October 2012
Where the pH is the lowest, corals can no longer grow - sand, rubble and seagrasses replace the reef.
Personal Perspectives

Sneak Peek: Future of Coral Reefs in an Acidifying Ocean

Scientists don’t often get the opportunity to travel through time. But nestled...
August 2012
A graph compares the crustacean biodiversity of coral reefs around the world.
Personal Perspectives

Hotspot of Biodiversity

We have arrived as the advanced scouting party to the scene of this year's field...
June 2012
An underwater photo of coral recovering from a bleaching event.
Personal Perspectives

A Pleasant Surprise: The Recovery of Bleached Panamanian Corals

Last September, the Citizens of the Sea blog series brought you a story of doom and...
April 2011

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