Hammerhead sharks 'hold their breath' to maintain body temperature while hunting in cold, deep waters, a strategy that may be common among other deep-diving marine creatures. Hammerhead sharks “hold their breath” to maintain body temperature as they hunt in deep, cold waters, according to a new s
Hammerhead sharks use a “breath-holding” technique to maintain body temperature while hunting in deep, cold waters, according to a new study. This previously unobserved phenomenon is similar to thermoregulation strategies employed by marine mammals and may be common among other deep-diving sharks and fishes. The study used remote biologgers implanted in adult sharks to measure depth, water temperature, activity rates, body movements, and internal body temperature.
Hammerhead sharks “hold their breath” to maintain body temperature as they hunt in deep, cold waters, according to a new study. The previously unobserved and unexpected phenomenon, which has broad similarities to breath-holding thermoregulation strategies employed by marine mammals, may be widespread among other deep-diving sharks and fishes.
For example, scalloped hammerhead sharks , which occupy warm surface waters in temperate and tropical coastal regions, routinely make repeated deep dives to depths exceeding 800 meters where water temperatures can get as low as 4 degreesto hunt for prey. Given their lack of morphological and vascular adaptations to actively conserve body heat, it’s unknown how these sharks can maintain body temperature during deep, frigid dives.
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