Seals breath air,But that doesn't stop some of them from sleeping underwater.They hold their breath and diveTo sleep for up to 20 minutes at a time.Sleeping deep underwater helps these seals stay safe from animals that hurt them near the surface.
Seals breath air,But that doesn't stop some of them from sleeping underwater.They hold their breath and diveTo sleep for up to 20 minutes at a time.Sleeping deep underwater helps these seals stay safe from animals that hurt them near the surface.
Seals breath air,But that doesn't stop some of them from sleeping underwater.They hold their breath and diveTo sleep for up to 20 minutes at a time.Sleeping deep underwater helps these seals stay safe from animals that hurt them near the surface.<br>