Dire Bunyip

An aquatic predator the size of a small boat, its sleek body rippling with muscle beneath thick, mottled hide. The dire bunyip lurks in deep rivers and coastal waters, surfacing only when it catches the scent of blood or disturbed prey. Once it locks onto a target, retreat isn't in its nature - the smell drives it into relentless pursuit. Ships aren't obstacles but challenges; the creature slams into hulls with bone-jarring force, splintering wood and capsizing smaller vessels to reach whatever's inside. Its powerful tail can sweep entire decks clear with a single blow. Other bunyips give it wide berth, recognizing an apex threat they can't match.