Seals' muscles hide a built-in scuba tank

日期:2017-11-10 07:00:10 作者:常桶 阅读:

AN OXYGEN reservoir within seals’ muscles could explain how they can dive underwater for up to 80 minutes at a time without taking a breath. Seal muscle contains 20 times as much myoglobin – a protein that stores and transfers oxygen within their cells – as humans. Seals also stop breathing for 20 minutes at a time while asleep on land, which probably helps them conserve energy. Thomas Jue of the University of California, Davis,