Seal (Franchise)

Seals are marine animals only mentioned in the How to Train Your Dragon franchise.

Description
Seals are often referred to as pinnipeds. They are semiaquatic marine animals characterized by their fins which serve as feet. They are divided in three families: Odobenidae, Ostariidae and Phocidae.

Their hearing and eyesight are adapted for both water and air. In addition, they developed advanced tactile system in their whiskers.

Their diet mostly consists of fish marine invertebrates, although some species (like the leopard seal) eat larger animals.

Function
In the franchise, the seals have no function.

In reality, seals are hunted for their pup's fur, though it is illegal in most countries.

Dragons: Riders of Berk
In the episode Defiant One, Tuffnut jokes that Snotlout would be a baby seal.

"Fishlegs: Hey, what's that? Stoick: It's Hiccup! Tuffnut: And he picked up a baby seal!"

- Tuffnut joking