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Tlingit paddlers set the canoe in Washington’s Potomac River for its ceremonial launch.
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Canoe Placed in Potomac River

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Sometimes the raven monitored Chilton’s progress from an overhead perch.
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Raven Keeps Watch over Carver

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These rattles from British Columbia were used during shamanistic performances.
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Ceremonial Rattles

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Illustration of the extinct ammonite, related to the modern squid.
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Ammonite

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Squid size comparison chart: Lycoteuthis springeri (10-12cm), Leachia atlantica (up to 12cm), Promachoteuthis sp. (up to 5cm), Batoteuthis scolops (up to 20cm).
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What is the Largest Squid? A Squid Size Comparison Chart

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Sea anemones, brittle stars, and sea urchins make a home on mangrove roots.
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Mangrove Roots Up Close

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These corals are dead—smothered in sediments and overgrown with algae.
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Dead Coral Overgrown with Algae

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This Marine National Monument protects a chain of atolls and reefs 1,931-kilometers (1,200-miles) long.
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Northwestern Hawaiian Islands Marine National Monument

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The Florida Keys National Marine Sanctuary encompasses several state parks and wildlife refuges.
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Florida Keys National Marine Sanctuary

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These bleached corals in the Gulf of Mexico are the result of increased water temperatures.
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Bleached Corals

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A few corals are part of this small sampling of the approximately 35 million specimens represented in the invertebrate zoology collection housed at the National Museum of Natural History.
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Specimens from the Smithsonian Invertebrate Zoology Collection

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Photograph of a many-armed sea star with maroon and white feathery-looking arms, with a deep red sea fan in the background.
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Feather Star

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