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Giant squid have eight arms but use their two long feeding tentacles to seize prey.
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Giant Squid Anatomy

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The tough serrated ring around the opening grips the squid’s prey.
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Giant Squid Sucker

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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 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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Cooks Bay in Moorea is one of the places that researchers are scouring in their quest to collect one of every life form big enough to pick up with tweezers.
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Cooks Bay, Moorea

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This brightly colored squat lobster collected in Moorea is a common find among the coral heads. Although called lobsters, this group of crustaceans is more closely related to hermit crabs than to true lobsters.
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Squat Lobster

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Adult green sea turtles spend most of their time grazing in seagrass meadows.
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Green Turtle in Seagrass

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Two sea lions interact amongst schools of small fish.
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Seal or Sea Lion?

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Up close look at thin tentacles of a jellyfish.
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Jellyfish Tentacles Close Up

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A translucent arctic comb jelly.
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Arctic Comb Jelly

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