Armor Class 19 (natural armor)
Hit Points 178 (17d12 + 68)
Speed 20 ft., swim 40 ft.
Saving Throws DEX +4, CON +8, WIS +5
Damage Resistances fire
Senses darkvision 120 ft., passive Perception 11
Languages Aquan, Draconic
Challenge 10
Amphibious. The dragon turtle can breathe air and water.
Multiattack. The dragon turtle makes one Bite attack and two Claw attacks.
Bite. Melee Weapon Attack: +9 to hit, reach 10 ft., one target. Hit: 11 (1d12 + 5) piercing damage plus 6 (1d12) lightning damage.
Claw. Melee Weapon Attack: +9 to hit, reach 5 ft., one target. Hit: 9 (1d8 + 5) slashing damage.
Steam Breath (Recharge 5–6). The dragon turtle exhales steam in a 30-foot cone. Each creature in that area must make a DC 16 Constitution saving throw, taking 42 (12d6) fire damage on a failed save, or half as much damage on a successful one. Being underwater doesn't grant resistance against this damage.
Fizban's Treasury of Dragons, p. 192