The thunderdrum is a tidal class dragon.

It has a limit of 6 shots and it has a wingspan of 48 feet.

It's fire type is sonic blast.

It's size is 68 feet.

Abilities:
Can expel air from body to swim
Fire balls
Being nearly deaf makes it immune to the Death Song's call

Attack: 12
Speed: 14
Armour: 10
Firepower: 16
Jaw Strength: 7
Stealth: 8

Features:
Expandable mouth
Small legs
Two pairs of wings
Nadal born
Spines

Colour:
Mainly blue
Purple
Green
All with a white belly

Habitat:
Sea caves
Dark tide pools

Trainable:
Yes