15 minutes long, but a 73 minute dive has been recorded. They live on or under the 'fast-ice''. They stay below the sea ice breathing through cracks. Weddell seals grid the ice with their teeth. Out of the water they are slippery,quiet animals relaxing in clubs of up to a dozen Under the water they are lively, alert and can be very noisy making hooting and groaning noises.
Spring is the time when groups of pregnant females lead by one male gather on broken in shore ice.
The pups are born in September or October are often confronted with temperatures as low as minus-20'c. The pups rely heavily on milk for the first 6 weeks. By the time they are weaned, they have more than doubled their birth. There are about two hundred different kinds of Ice Fish. There are Hag Fish, Barracuda Lantern Fish, and Skates who are also found in these cold waters.