Do Walruses Grow Mustaches?
Walruses do not grow mustaches. Instead, they grow whiskers—long, stiff hairs known as vibrissae.
The Purpose of Walrus Whiskers
These highly sensitive whiskers help walruses detect prey in murky water and navigate their surroundings. They are practical sensory tools, not fashion statements.
Growth
Detailed studies on walrus whisker growth rates are limited, but like human hair, they likely grow continuously throughout the animal's life.
So while a walrus won't sport a handlebar mustache, its whiskers are an impressive natural adaptation.