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Illustration of the Paleozoic shallow water habitat.
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A Mississippian Marine Habitat (359 - 318 Million Years Ago)

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A rendering of an underwater marine scene from the Cambrian Period, featuring an arthropod, annelids, and other animals.
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Cambrian Period (542 – 488 Million Years Ago)

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Photo of a Hawaiian monk seal on the beach, with the ocean in the background.
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The Endangered Hawaiian Monk Seal

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Purple, pink and green corals growing underwater on a metal fence-like substrate.
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The Coral Gardener

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A veined octopus sits inside a vacant bivalve shell, which it uses as a portable shelter, in the Philippines. This is one of the few examples—if not the only example—of tool use in invertebrates.
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Veined Octopus at Anilao Batangas Pier, Philippines

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“Upon returning from the reef after a night dive, I swam toward a bright reflection and came eye-to-eye with this beautiful, curious squid.” -- Nature's Best photographer Charles Viggers.Equipment Used to Capture the Shot: Nikon D700; 105mm ƒ/2.8 lens
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Squid at Sunset Reef Grand Cayman, Cayman Islands

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“It was shaping up to be a bad night dive when my mask broke and I was forced to come up early. The others continued diving and I was becoming a bit bored at the surface when I suddenly spotted some grey reef sharks hunting in the light of our ship. I to
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Grey Reef Shark, West New Britain, Father Reefs, Papua New Guinea

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“In 2010, I became the first photographic artist to ever photograph lava from inside the surf. I waited five years for the conditions to be perfect for this type of shot. First, the lava had to cross the beach where most of the coast is a rugged cliff. T
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Lava Wave, Kalapana, Hawaii, USA

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Woods Hole researchers sample oil from the ruptured well in the Gulf of Mexico
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Woods Hole Scientists Respond to the Gulf of Mexico Oil Spill

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Waves breaking on the shore
Overview

Currents, Waves, and Tides

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A sea turtle swimming
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Sea Turtles

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a blue negative of algae
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No Longer Anonymous: Anna Atkins and her Algae

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