Marine Animals Conserve Energy by Swimming at Optimal Depths
A new study reveals that air-breathing marine species like turtles, penguins, and whales swim at a depth 'sweet spot' to reduce drag and save energy during long-distance travel.
- Researchers from Swansea and Deakin Universities studied swim depths of marine mammals, birds, and reptiles across six institutions in five countries.
- Marine animals consistently swim at depths around three times their body diameter to minimize wave drag and energy expenditure.
- The study used advanced tracking technologies, including animal-borne cameras and satellite data, to measure swim depths with high precision.
- This depth optimization was observed during non-foraging activities, such as commuting to feeding areas or long-distance migrations.
- The findings highlight a shared energy-saving strategy across diverse species, ranging in size from little penguins to humpback whales.
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