The Legend of Zelda: Link's Awakening (2019 video game)/Secret Seashells

About Seashells
Secret Seashells can be found in various locations throughout the game.

Seashell Mansion
Just south of Kanalet Castle is the Seashell Mansion. The spirit of the mansion promises the ultimate sword. Make sure you dig the glowing dirt to the east of the mansion to establish a convenient warp point.