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More than 30 of dolphins in the Bahamas have scars from shark bites Drs Mike Heithaus and Valeria Paz gather bite impressions from three shark species that may be the predators

Bull sharks fighting a great hammerhead was a rare encounter between top ocean predators that occurred in Florida and was caught on camera Dr Heithaus and a team of shark experts launch an investigation pinning one against the o

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Discover what happens when two of the deadliest predators face each other

Biologists Dr Mike Heithaus and Dr Frances Farabaugh free dive with the tiger shark, one of the most dangerous sharks, to learn why sharks are drawn to Hawaiis volcanoes