Shark Week 2018

Volunteer Divers at Cocos Island National Park Help Collect Data for the Creation of the Cocos – Galapagos Swimway

In 2007, I traveled backwards in time. As I dove below the surface of the water at Cocos Island, two giant and curious sea turtles gracefully greeted me.  By the time I reached 30 meters below the surface, I found myself surrounded by hundreds of hammerhead sharks, another ancient species whose ancestors outlived the dinosaurs. …

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When sharks are fished-out from coral reefs, fish body shapes change

Sounds kinda weird.. but studying nearly identical coral reef systems off Australia, my collaborators and I discovered something unusual on the reefs subjected to nearly exclusive fishing of sharks—fish with significantly smaller eyes and tails. This provides evidence of body shape changes in fish due to human-driven shark declines from overfishing. In the study, our…

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About the Blog

Researchers, conservationists, and others share stories, insights and ideas about Our Changing Planet, Wildlife & Wild Spaces, and The Human Journey. More than 50,000 comments have been added to 10,000 posts. Explore the list alongside to dive deeper into some of the most popular categories of the National Geographic Society’s conversation platform Voices.

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Voices director: David Braun (dbraun@ngs.org)

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