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Yellow and light green sunburst lichen on a rock.
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Sunburst Lichen

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Bill Hoffman cleaning the tank windows before opening the aquarium for the day.
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Bill Hoffman Cleans Coral Reef Tank

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Two skulls belonging to extinct marine mammal herbivores used in the new study, both from the Smithsonian’s collections.
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Marine Mammal Herbivore Skulls

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Photo of a mountain of billiard balls made from ivory.
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Ivory Billiard Balls

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Lamlash Bay marine reserve with Holy Island in the background. 
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Lamlash Bay

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First Place (High School age group): What Goes On Your Plate by Ruofei Rao, Age 17, New Zealand
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What Goes On Your Plate

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A coral head in the Mesoamerican Reef has both bleached and living coral. The white sections are bleached and the brown parts still contain zooxanthellae, the symbiotic algae that provide food to their coral hosts.
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Bleached Coral On Mesoamerican Reef

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Limpets leave a zigzag trail on rocks as they move along scraping off algae and seaweed with their strong teeth.
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Limpet Teeth Marks

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A wounded warrior and a SCUBAnaut practice compass navigation in a field.
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SCUBAnauts Practice Navigation

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Portrait of Mary Anning, before 1842
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Portrait of Mary Anning, before 1842

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The Portage Glacier near Anchorage, Alaska has retreated so much that it is no longer visible from the visitor center built for its viewing in 1986.
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Portage Glacier

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Seagrass species come in many different shapes and sizes, as illustrated by this conceptual diagram of some common seagrass species.
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Seagrass Diversity

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