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shark conservation

The pregnant porbeagle shark, subject of the study, after her release after tagging

Shark-Eat-Shark World: Tracking Tag Reveals Unexpected Predation of Large Porbeagle

Believed to be predators in perpetual motion, grey reef sharks had previously only been observed in motion, leading most to believe they needed to swim in order to breath.

Some sharks don’t need to swim continuously to stay alive

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