Ami's Pearl Dive

Ami's Pearl Dive is a brand new underwater adventure game for the Game Boy Color!
You play as Ami, a young ama diver with a pitiful lung capacity, she befriends a mermaid named Yoko who assists her in diving, but one day Yoko disappears without a trace…

Thus Ami sets out to get to the bottom of this! Collect pearls, dodge enemies, meet new faces and find many tools to help her descend the underwater caverns to find her friend!