Mike Heithaus

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 Hawaii's volcanoes.

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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