Unlike other amphibious creatures that can survive underwater on stored oxygen but must come back up for air, these caterpillars can spend several weeks without ever breaking the surface, according to the paper, which was published online on Monday in Proceedings of the National Academy of Sciences.
It isn't yet clear how the insects do it. Rubinoff and co-worker Patrick Schmitz of the University of Hawaii did not find any water-blocking stopper over the caterpillars' tracheae or evidence of gills. The animals drowned quickly when kept in standing water, so they seem to need the higher levels of oxygen present in running water, and probably absorb it directly through pores in their body, the scientists said.
Friday, Apr 17th
Last update07:24:45 AM GMT
Headlines
The US military said it killed four more people in a boat strike in the eastern...
As millions of people held their breath, the four Artemis II astronauts flawlessly splashed down back...
The astronauts aboard NASA's Artemis II have now traveled farther from Earth than any other humans...
