Icy Seal Whiskers
Seals have 1,500 nerve endings per whisker, which is more than cats and rats have (about 200 each). This lets them to discover and capture fish even if they can’t see. According to scientists, their whiskers are sensitive enough to size up a herring down to the centimeter.
Seals have wavy, irregular-shaped whiskers in contrast to other mammals with rounded whiskers, which are curved and smooth. The goal of the whiskers is to keep the seal stable while it swims. When detecting hydrodynamic traces, the whiskers only shake occasionally. When a seal is following underwater, its whiskers tuck away from its face.