Ideas worth spreading

Tagging tuna in the deep ocean

378,290 views | Barbara Block • Mission Blue Voyage

Tuna are ocean athletes -- fast, far-ranging predators whose habits we're just beginning to understand. Marine biologist Barbara Block fits tuna with tracking tags (complete with transponders) that record unprecedented amounts of data about these gorgeous, threatened fish and the ocean habitats they move through.

Tuna are ocean athletes -- fast, far-ranging predators whose habits we're just beginning to understand. Marine biologist Barbara Block fits tuna with tracking tags (complete with transponders) that record unprecedented amounts of data about these gorgeous, threatened fish and the ocean habitats they move through.

This talk was presented at an official TED conference. TED's editors chose to feature it for you.

About the speaker

Barbara Block

Marine biologist

See speaker profile

Barbara Block studies how tuna, billfish and sharks move around (and stay warm) in the open ocean. Knowing how these large predators travel through pelagic waters will help us understand their role in the wider ocean ecosystem.

This talk was presented at an official TED conference. TED's editors chose to feature it for you.