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Barbara Block:
Tagging tuna in the deep ocean

Mission Blue Voyage · 20:06 · Filmed Apr 2010
Subtitles available in 18 languages
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Barbara Block: Tagging tuna in the deep ocean
20:06 · Filmed April 2010 at Mission Blue Voyage · Subtitles available in 18 languages

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.

Marine biologist
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. Full bio

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