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a sunken propeller becomes overtaken by a reef with two scuba diver in the background
Article

When Wrecks Become Reefs

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Two nurse sharks hover over a baited cage
Lesson Plan

Caution! Do Not Bleach

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The Peninsula Valdes in Argentina was inscribed on the World Heritage List in 1999. The site is home to important breeding populations of the endangered southern right whale (Eubalaena australis), southern elephant seal (Mirounga leonina), and southern sea
Slideshow

Marine World Heritage Photo Gallery

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a fuzzy brown sea anemone cover the coral
Photo

Corallimorphs

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Corallimorpharian
Photo

Soft Coral Close-Up

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A piece of the Hyperbolic Crochet Coral Reef exhibit.
Photo

A Rainbow of Crocheted Corals

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Corals, sponges, and algae are the major components of most coral reef communities as shown in this picture.
Photo

Coral Reef on Gangga Island, Indonesia

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Imagen submarina de dos peces nadando cerca de corales pétreos y ramificados.
Article

Historias de Éxito de una Boleta de Calificaciones de Reef

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Two nurse sharks hover over a baited cage
Lesson Plan

Fish Feeding

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This orange boring sponge (Cliona varians) overgrows several coral species at Panama's Smithsonian Tropical Studies Institute.
Article

Ocean Acidification Excites Boring Sponges

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Many species of pink coralline algae, which cements coral reefs together, cover a reef surface in the Southern Line Islands.
Article

Coralline Algae: The Unsung Architects of Coral Reefs

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Walter Adey and the NMNH coral reef tank
Article

The Evolution of a Reef Aquarium

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