Seel first appeared in B2W2-009 when Lexi battled against Burgh at the Castelia Gym. Seel appeared only several times from then on in New Beginnings. It spends most of its time swimming around, and prefers not to battle.
Seel is a very independent Pokémon, who prefers to be alone rather than playing with others. It often trains with other Water-type Pokémon for its hobby.
Seel is able to use its horn to breakup ice easily. It's able to cope with freezing cold waters with ease.