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In the X-ray image of this Viper Moray Eel (Enchelynassa canina), note the second set of jaws in the “throat”; these are the gill arches, which are present in all fish.
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X-Ray Image of a Viper Moray Eel

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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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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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Raccoon butterfly fish and angelfish on a reef in the Red Sea, near Sharm el Sheik, Egypt.
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Coral Reef Scene

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A sea lion in the Sea of Cortez observes Auster as he observes reef fishes.
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Auster Diving with Sea Lion

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A pearly razorfish
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Pearly Razorfish

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Many medicines were based on a chemical from the sea sponge Tectitethya crypta.
Photo

From Sea Sponge to HIV Medicine

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Giant clams are one of the many wonders of coral reefs. They can grow up to five feet wide, weigh over 400 pounds, and live for 100 years!
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Restocking Giant Clams

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A graph compares the crustacean biodiversity of coral reefs around the world.
Article

Hotspot of Biodiversity

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Two nurse sharks hover over a baited cage
Lesson Plan

Coral Adaptations Inquiry Lab

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Two nurse sharks hover over a baited cage
Lesson Plan

Mutualism and Coral Reefs

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Two nurse sharks hover over a baited cage
Lesson Plan

Coral Reef Relationships

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