The scientific community is divided as to whether dolphins or whales will deliberately save a person from a shark attack. But the people who have lived through these terrifying encounters…

To find out why sharks are drawn to Hawaii’s volcanoes, biologists Dr. Mike Heithaus and Dr. Frances Farabaugh free dive with one of the most dangerous sharks: the tiger shark.

In the Bahamas, more than 30% of dolphins have shark-bite scars. With a never-before-seen non-toxic gel bite pad and life-sized dolphin decoy, Dr. Mike Heithaus and Dr. Valeria Paz collect…

In Florida, a rare event between top ocean predators was captured on video: bull sharks attacking a great hammerhead. Dr. Heithaus and a team of shark experts launch an investigation…