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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The evolution of whales represents one of the great stories in macroevolution. It's a narrative that has mostly benefitted from an extraordinary series of fossils recovered from rocks around the world, including challenging field...
About 100 million years ago , during the heyday of the dinosaurs, reefs were...
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Most people have never heard of the Hawaiian petrel , an endangered, crow-sized...
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What makes a top predator? Razor-sharp teeth? Speed? Strength? Size? Who is the...

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Charles Darwin is so well known he almost needs no introduction. The 19th-century naturalist and geologist spent his life documenting and collecting...
One of the ocean's tiniest organisms often does the most harm. Microscopic...
This summer, many of you have likely enjoyed feasting on crabs, be they blue...

DIVE DEEPER

Whales swim, but their ancestors walked. Whales are mammals (like us) whose ancestors lived on land. Life probably began in...