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 ocean is not as natural as it once was. Where there used to be large predators that we took for sea monsters, now there are tiny fish and jellyfish. But there are a...
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Evidence shows that life probably began in the ocean at least 3.5 billion years...
A public service announcement uses a dramatic example to emphasize that ocean...
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Jorge and I packed up the night we arrived in Panama with Aaron O'Dea and his...

LATEST POSTS

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...