Seahorses are enemies in Aqua Boy.
Seahorses are teal coloured with a white dot on their face. They have a protruding belly and a tail that curves up to their nose height.
Seahorses are found in the central cave area as well as some other chambers within the game. When they see Aqua Boy, they will move around rapidly within a set position and fire a single bullet at him about every three seconds. If the pistol is aimed properly, the seahorse is destroyed in two max-charge blasts. Sometimes it leaves behind a heart of health or a charge pickup when destroyed.