Magnetic personality? Scientists investigate how Weddell seals navigate under sea ice.
Weddell seals spend much of their lives swimming and hunting for prey underneath Antarctic sea ice. These marine mammals – capable of diving down hundreds of meters in the frigid waters of the Southern Ocean for nearly an hour at a time – must still return to the surface to take a breath now and then.
Dogs, cats, and big-wave surfers: Healthy heart lessons from animals and athletes
Heart rates of big-wave surfers are among the surprises from 30 years of studying exercise physiology in people and wild animals.