Yurarin Boo

Yurarin Boo are seahorse-like dragons found in the Muda Kingdom in Super Mario Land. Unlike their smaller cousins, the Yurarin, the Yurarin Boo move up and down shooting fireballs, and can be found out of the water. They are also known to be invincible to superballs. To defeat one, Mario had to jump on one's head or shoot it with torpedoes. It's death was worth 800 points to him.

Yurarin Boo are apparently the stronger cousins of the Yurarin, and both are lead as a species by Dragonzamasu, the ex-ruler of Sarasaland.

They have apparently not been seen since Tatanga's defeat, and their current situation is unknown.