Don’t be fooled by the drool. Weddell seals are excellent communicators.
One of the things that has made me smile the most in Antarctica is the noise that Weddell seal pups make when they are communicating with their mothers. Seals use sound to help them find their way around, hunt and communicate. Their sense of sight and smell is reduced underwater, so seals (and other marine mammals) use sonar, and their whiskers act as a kind of radar receiver!