Nick, Luca, and Miro, three harbor seals involved in the German study, performed almost as well as humans at this task.

In a study in the journal Science, McKnight and his colleagues report they may have found the answer: Seals can directly perceive how much oxygen is circulating in their body and act accordingly.

It’s tagging seals. Several species of seals live around and in Antarctica and regularly dive more than 100 meters in search of their next meal. These seals are experts at swimming through the ...

DETROW: OK. Let's talk seals next. I hear some of them are doing science now? BARBER: Yeah, they're trying to take my job. DETROW: It's OK, 'cause we're all going to the sugar-eating jobs.