During 48 dives in August 2011, each lasting an average of 6 minutes and reaching more than 300 meters deep, the sea lion's lungs collapsed at about 225 meters down — and then re-expanded at the same depth during the mammal's a
During 48 dives in August 2011, each lasting an average of 6 minutes and
reaching more than 300 meters deep, the sea lion's lungs collapsed at about 225 meters down — and then re-expanded at the same depth
during the mammal's a
during the mammal's
ascent.