Yurarin

Yurarin are seahorse-like dragons found in the Muda Kingdom in Super Mario Land. Yurarin's attack patterns are very simple and easy to dodge. They simply float around at a slow speed, trying to hit Mario. Mario is awarded 400 points for shooting one twice with torpedoes supplied by his Marine Pop. They are only found in World 2-3 of the Muda Kingdom, the Marine Pop's stage. A slightly larger and stronger relative of the Yurarin, named Yurarin Boo, appears exclusively in the same kingdom as well. The only real difference between a Yurarin and a Yurarin Boo is that Yurarin Boo have the ability to shoot fire while Yurarin do not. Dragonzamasu, the boss of the Muda Kingdom, resembles these creatures.

Super Mario Land

 * Virtual Console Manual: "This underwater underling of Dragonzamasu trembles as it swims along. Defeat it with two torpedoes."