And they call them a swellshark because if they're threatened, they can gulp down water and blow up like an inner tube, about twice their size, and wedge themselves under a rock, so they don't get eaten by a predator.
A říká se jim tak, protože když jsou ohroženy, mohou polykat vodu, nafouknout se jako duše pneumatiky na dvojnásobnou velikost a vklíní se pod skálu, takže je predátor nesežere.