Sauropod
Beginning in the 1970s, the effects of sauropod air sacs on their  lifestyle began to be explored. Evidence from sedimentology and biotechnology showed that sauropods were primarily terrestrial animals. In 2004 D.M. Henderson noted that, with their extensive system of air sacs, sauropods could not submerge their bodies completely below the surface of the water. in other words, they would float. So they would not have been in danger of lung collapse due to water pressure when swimming.