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A diagram of cephalopod suction
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An Octopus' Tight Grip

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An octopus fossil
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Cretaceous Octopus

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Various perspectives of a paper nautilus shell.
Photo

Nautilus Shell

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A transparent ctenophore with two long tentacles.
Photo

Arctic Ctenophore with Long Tentacles

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Colorful Christmas tree worms
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A Forest of Christmas Tree Worms

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An octopus shoots ink in defense as it swims away from a scuba diver.
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Octopus Shoots Ink

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An image of a giant anemone with yellow-tipped white tentacles.
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Giant Anemone

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The shell of a sea slug
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Spiny Parachutes

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A female (top left) and male Photerus annecohenae. Note that females are larger than males (sexual dimorphism) and that males have bigger eyes.
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A female and male Photerus annecohenae

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Chrysaora melanaster is a jellyfish found in the Arctic.
Overview

Jellyfish and Comb Jellies

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Horizontal bands of color represent different species of lichen that have adapted to the conditions at different heights above sea level.
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Seaside Lichens

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A blue and yellow slug
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Lightning Bright Slug

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