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UV light illuminates growth rings in a cross-section of 44-year-old Primnoa resedaformis coral found about 400 m (1,312 ft) deep off Newfoundland.
Photo

Coral Growth Rings

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Illustration of eddy fields in the Atlantic Ocean
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Robot Explores Ocean Eddies

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An algal bloom, also known as a red tide, has converted the ocean's surf to a red color
Article

Scientists Work to Predict and Prevent Algae Blooms

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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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Two men each hold a ceramic vessel at the archaeological excavation
Article

Archaeologists Study Early Whaling Community in Quebec, Canada

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Human activity is increasing in the Arctic marine environment due to climate change. To help the most vulnerable areas, the Global Marine Program of IUCN, along with partners, is convening a series of workshops aimed at enhancing ecosystem-based management and identifying biologically or ecologically important or vulnerable habitats. Burgerbukta, a bay in Svalbard, Norway, is being managed for ecosystem protection.
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The Sant Ocean Hall: Life at the Poles Exhibit

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Two nurse sharks hover over a baited cage
Lesson Plan

This Old Tubeworm

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A shell placed in seawater with increased acidity slowly dissolves over 45 days.
Overview

Ocean Acidification

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A photo of a red-colored sea anemone photographed in the Baltic Sea.
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Urticina Felina, a Baltic Sea Anemone

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When we use fossil fuels to power our cars, homes, and businesses, we put heat-trapping carbon dioxide into the atmosphere.
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Tracking Ocean Acidification

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Polar bears are threatened by a lack of sea ice.
Article

Climate Change at the Poles

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A marine biologist measures the temperature of an ice core.
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Measuring Ice Core Temperatures

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