14 (natural armor)
247 (15d20+90)
fly 50 ft.
Con +10, Wis +3
10
Melee Weapon Attack: +9 to hit, reach 10 ft., one target. Hit: 22 (3d8 + 9) piercing damage. If the target is a Large or smaller creature, it must succeed on a DC 18 Dexterity saving throw or be swallowed by the leviathan. A swallowed creature is blinded and restrained, it has total cover against attacks and other effects outside the leviathan, and it takes 21 (6d6) acid damage at the start of each of the leviathan's turns.