Mahalo for supporting Honolulu Star-Advertiser. Enjoy this free story!
COURTESY MARK ROYER / UNIVERSITY OF HAWAII A sixgill shark equipped with an instrument package returns to deep water. In a study published recently, scientists from the University of Hawaii at Manoa and the University of Tokyo revealed that two species of deep-sea sharks — sixgill and prickly sharks — have positive buoyancy, meaning they have to work harder to swim downward than upward.
COURTESY UH Researchers find deep-sea species that have a tendency to drift toward the surface.
COURTESY MARK ROYER / UNIVERSITY OF HAWAII University of Hawaii researcher Carl Meyer attaches an accelerometer package to the pectoral fin of a large sixgill shark. A new study, co-written by Meyer, shows that some deep-sea sharks can glide uphill for minutes at a time without using their tails.