“Squalus” means “shark”, “longus” means “long”. Hence, “Long Shark”.
While no such shark exists on Earth, certain sharks such as Frilled Shark do have similar long, serpentine bodies. The Frilled Shark, however, looks much less traditionally shark-like than the Long Shark of Terrace.
Generally less-impressive than the larger or more aggressive species, the uncommon Long Shark nevertheless remains memorable for its unusual body shape.
Due to their general elusiveness and small number of interactions with humans, Long Sharks are not usually considered a threat to humans.