Dragon Turtle

Dragon Turtle CR: 17

Gargantuan dragon, neutral

Armor Class: 20 (natural armour)

Hit Points: 341 22d20+110

Speed: 20 ft , swim: 40 ft

STR

25 +7

DEX

10 +0

CON

20 +5

INT

10 +0

WIS

12 +1

CHA

12 +1

Saving Throws: Dex +6, Con +11, Wis +7

Damage Resistances: Fire

Senses: Darkvision 120 ft, passive Perception 11

Languages: Aquan, Draconic

Challenge Rating: 17

Amphibious. The dragon turtle can breathe air and water.

Actions

Multiattack. The dragon turtle makes three attacks: one with it's bite, and two with it's claws. It can make one tail attack in place of it's claw attacks.
Bite. Melee Weapon Attack +13 to hit, reach 15 ft, one target. Hit 26 3d6+7 piercing damage.
Claw. Melee Weapon Attack +13 to hit, reach 10 ft, one target. Hit 16 2d8+7 slashing damage.
Tail. Melee Weapon Attack +13 to hit, reach 15 ft, one target. Hit 26 [3d12+7] bludgeoning damage. If the creature, must succeed on a DC 20 Strength saving throw or be pushed up to 10 feet away from the dragon turtle and knocked prone.
Steam Breath (Recharge 5-6). The dragon turtle exhales scorching steam in a 60 feet cone. Each creature in that area must make a DC 18 Constitution saving throw, taking 52 15d6 fire damage on a failed saving throw, or half as much damage on a successful one. Being underwater doesn't grant resistance to this damage.

Dragon Turtles prowl the ocean, large enough that when their shells only are exposed they appear as islands. Each dragon turtle prowls a region of the seas from a lair, which can be underwater caverns, drown castles, reefs or other such structures. They regularly sink ships carrying treasure which they hoard in their lairs. Sometimes, intelligent marine creatures will tempt one into becoming an ally with hoards of treasure, and mariners (especially pirates) will barter with one to defend a hoard with it getting a share of any spoils.

Suggested Environments

Seas & Oceans.