After catching the Ezo scallop, the new NPC Ah O will appear. Players can use the Ezo scallop to exchange it for the Pearl Series Furniture DIY Manual and Pearls. Otter's exchange is limited to once a day, but if you don't exchange Ezo scallops, Otter will appear every time you get Ezo scallops and ask if you want to exchange.

When the player picks up Ezo scallops in the diving area, Otter will automatically appear from a distance. Then it will ask the player if they are willing to give away the Ezo scallops in their hands. In return, it will also give the player a specific reward, so you must keep this.