“ Let me warn you... I'm really shy around people... I don't like talking to strangers... If you have a scale, like that fisherman I once met long ago at the Starting Beach... ”
—The shy mermaid inside the clamshell
Closed Clamshell (閉じた貝殻, Tojita Kaigara, lit. Closed Shell) is an event in Tomba! 2: The Evil Swine Return. In order to clear this event, the events The Stuck Fishhook Line and Lost and Found must be cleared.
Make the shy mysterious mermaid open the clamshell she is hiding in.
Enter the room beside the Water Tank Room where the A Mermaid in a Water Tank! event takes place. The Swimming Pig Suit is required to enter the room as it is flooded with water. Talk to the mermaid inside the clamshell to activate the event.
In order to clear the event, the Mermaid's Scale must be obtained from the Lost and Found event at the Waterfall of the Heavens. Once the Mermaid's Scale is obtained, head back to the clamshell and talk to her again to clear the event.