These sharks are warm water animals but feed at depths where seawater temperatures are around 40°F, yet they need to keep their bodies warm to hunt effectively.
University of Hawai‘i at Mānoa researchers published their discovery in Science that scalloped hammerhead sharks hold their breath for warmth while diving deep to hunt for prey.
A video showing dozens of hammerheads hunting off a popular Gold Coast beach is the most significant shark activity seen in the area for more than 15 years, a prominent marine biologist says.