Ben Halpern

Feb. 15, 2008

State of the Oceans

We depend on them for food, recreation, and more -- so why do we treat our oceans so badly? In this hour, Ira and guests take a look at the state of the world's ocean ecosystems. The prognosis isn't good -- but is it hopeless?

oceans, ecosystems, water, coral, fish

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Michael Pollan Talks Plants and Food

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Whale Tales

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Mystery Box

How Humpbacks Hunt With Bubbles

Humpback whales blow bubbles around schools of fish to concentrate them for easier capture. It's called a bubble net, says David Wiley, research coordinator for Stellwagen Bank National Marine Sanctuary, and it's visible as a ring of bubbles at the surface. Now, with underwater digital tracking tags and custom visualization software, whale researchers can see what the whales are doing underwater when they're bubble-netting.

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