Like walruses, they also need to moult.

Looks like...Moult. Yeah, you're right.

After moulting, they head back out to sea to feed.

- especially during the moulting season. - That's a particularly dangerous time.

- Are they moulting now? - Some of them are.

Look at this. I'm so ticked off that I'm moulting.

I'm in the moult. That means I'm ready to mate.

"Avoiding closure with your parents can cause early moulting."

No, I'm moulting. Means I'm ready to mate.

Now they can moult the outer layers of their skin, rubbing themselves up against the rocks