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An 'austral' or southern breeder, Great Shearwaters (Ardenna gravis) migrate from breeding islands far to the south in the Atlantic before traveling to the Northern Atlantic to feed.
Slideshow

Migratory Seabirds: A Slideshow

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A submersible explores the deep reefs off of Curacao in the Caribbean.
Overview

DROP: The Deep Reef Observation Project

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On average, Arctic sea ice has decreased by four percent per decade since the late 1970s.
Overview

Sea Level Rise

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A Mesozoic Ocean scene
Overview

Ocean Through Time

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A wave curls near the shore.
Overview

American Spaces

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two mangrove trees in the crashing waves
Overview

Mangroves

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The Peninsula Valdes in Argentina was inscribed on the World Heritage List in 1999. The site is home to important breeding populations of the endangered southern right whale (Eubalaena australis), southern elephant seal (Mirounga leonina), and southern sea
Slideshow

Marine World Heritage Photo Gallery

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two images cropped together of women at desks facing each other
Timeline

An Irrepressible Wave

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