Why don't diving seals drown? Scientists finally have an answer

New research suggests seals sense internal oxygen levels to know when to come up for air. Digital version of story that already aired. Skedded for pub Weds. 3/26 at 6 a.m. Reporter: Lambert. Editor: Khan.

Why don't diving seals drown? Scientists finally have an answer
Trish, a juvenile gray seal, was one of the seals featured in a new study that looks at the mammals

New research suggests seals sense internal oxygen levels to know when to come up for air. Digital version of story that already aired. Skedded for pub Weds. 3/26 at 6 a.m. Reporter: Lambert. Editor: Khan.

(Image credit: University of St. Andrews Sea Mammal Research Unit)