Adult Reef Stomper

Breathless. Adult Reef Stomper does not need to breathe any form of air.

Echolocation. Adult ReefStomper does not need to see creatures to know they are there.

Reef Back. It has the appearence of a reef so for players to see it they must roll a perception check, disadvantage if they are above the water. 

Lay down. The Adult Reef Stomper lays its body down and restricts its limbs into its body, it is now prone and has resistence to all damage

Punch. The Adult Reef Back sends its fist forward at one enemy on a succsesful hit the enemy takes 4d10 Bludgening damage 

Boiling shot. The Adult Reef Stomper inhales a 60 foot cone and the shoots a 80 foot cone scalding water. on a succsesful hit the targets take 6d10 burning damage.

When killed every creature in a 200 foot radius makes a Constitution saving throw. on a failed save the creature takes 2 d12 psycic damage. on a succsesful save the creature takes half that damage.

The Adult Reef Stomper stomps its foot on the ground sending a magical earthquake for 20 miles

Sea Earthquake(6 Days). Every creature in combat makes a dexterity saving throw. on a failed save they take 10 d10 bludgening damage and are Paralyzed. on a successful save they take 10 d10 damage.