The Ocean Through Time

Life began in the ocean around 3.5 billion years ago and as evolution progressed, many species went extinct -- and some left behind fossils -- as others appeared. And even now, the ocean hasn't stopped changing as evolution continues and humans leave their mark.

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Microscopic, single-celled organisms called foraminifera have a fossil record that extends from today to more than 500 million years ago. Although each foram is just a single cell, they build complex shells around themselves...
CREDIT: Smithsonian Arctic Studies Center Basque Whalers Background Having...
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When you're standing in a museum surrounded by fossils, you can almost imagine...
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The evolution of whales represents one of the great stories in macroevolution...

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