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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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Colorful fireworks go off over the water.
Article

From Sea to Shining Sea

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Cartoonist Jim Toomey explains the "climate change connection" in two minutes.
Video

Two Minutes on Oceans With Jim Toomey: The Climate Change Connection

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A screenshot from the video with a map of sea level rise.
Video

Watching Rising Seas From Space

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Screenshot from video of fish swimming in clear blue water in the Cabo Pulmo reserve.
Video

Cabo Pulmo Reserva de la Biosfera del Patrimonio Mundial

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Fossil mosasaur skull and partial skeleton sitting in what looks like the dirt it was excavated from.
Article

If You Build An Ocean, Sea Monsters Will Come

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Two nurse sharks hover over a baited cage
Lesson Plan

How to Catch a Fish

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Two nurse sharks hover over a baited cage
Lesson Plan

Coral Adaptations Inquiry Lab

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Horseshoe Crab in Stage Harbor, Massachusetts
Article

This Flu Season, Thank a Horseshoe Crab

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A beach scene with groups of people walking in the water and playing with the sand.
Article

Be Kind to the Beach

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A screenshot of some of Smithsonian's marine story windows in Google Earth
Article

What Lives in the Gulf of Mexico? Exploring Marine Collections on Google Earth

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Map showing the range of the eastern and western populations of Atlantic bluefin tuna and their spawning grounds in the Gulf of Mexico and the Mediterranean Sea.
Article

Atlantic Bluefin Tuna (Thunnus thynnus)

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