What is it like to be eyeball to eyeball with a fish the size of a Volkswagen? Learn about the process of tagging tuna and how those tags are revealing surprises that might help save tuna from their own popularity in sushi restaurants.

Narrated by Ari Daniel Shapiro. Produced by Atlantic Public Media and Eduardo Garcia Milagros.

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What reef animal comes in a rainbow of crazy colors, can throw out its stomach to immobilize predators, then creep away and regrow a brand-new stomach? Its the sea cucumber, prized as a gastronomic delight by some cultures and beginning to yield some of its secrets to scientists. Follow host Ari Daniel Shapiro on an audio Google Earth Tour from a Chinatown market to the reefs of Fiji to learn more about this amazing creature.

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The arctic tern (Sterna paradisaea) makes an incredible migration each year. These small birds travel distances of more than 50,000 miles, from pole to pole, crossing through temperate and tropical regions along the way. Carsten Egevang used geo-locator tags to track ten of these terns, and he shares their story with us in this tour.

Narrated by Ari Daniel Shapiro. Produced by Atlantic Public Media and Eduardo Garcia Milagros.

Download the Google Earth Tour file.

“Sea grapes” may sound like something Poseidon would snack on, and not a killer algae. Yet Caulerpa racemosa var. cylindracea poses a serious threat to marine life. Spread by the bilge water of boats, this fast-growing alga is quick to take root, squeezing out native species. But there is one spot in the Mediterranean where cylindracea hasn’t yet taken over, and biologists like Juan Manuel Ruiz Fernández are trying to discover why.

Narrated by Ari Daniel Shapiro. Produced by Atlantic Public Media and Eduardo Garcia Milagros.

Download the Google Earth Tour file.