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, Volume 99, Issue 8, pp 671-672

First online:

Deep-diving dinosaurs

  • John HaymanAffiliated withDepartment of Pathology, The University of Melbourne Email author 

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Dysbaric bone necrosis demonstrated in ichthyosaurs may be the result of prolonged deep diving rather than rapid ascent to escape predators. The bone lesions show structural and anatomical similarity to those that may occur in human divers and in the deep diving sperm whale, Physeter macrocephalus.


Ichthyosaurus Deep diving Dysbaric bone necrosis Decompression illness