As Luca zips by, the creature lunges, grabbing the fish bike he's riding in its jaws.

"Aaaah!"

Luca shoves off the bike, using his tail to quickly propel away from the creature while the Leviathan takes the bike, bashing it against a rock until it cracks it open, exposing the crystals inside. Finally reaching what it wants, the Leviathan eats the crystals.