From Ghost Trappers Wiki
Seashells are a type of currency, used to purchase items related to the Ghostlantis location from Lady Ayumi Bayoushi's shop on the 9th floor of S.C.O.T.C.H. HQ.
Ghosts and locations
You can occasionally acquire one or more seashells as loot from the following ghosts and monsters:
You can occasionally acquire some seashells as part of the reward for completing a special mission.
You can occasionally acquire some seashells when you open a Currency box.
The following items will increase the number of seashells that are contained in a loot drop:
Add-on loothunter bonuses
The items in the table below have seashell loothunter bonuses that only activate if you have one of the companions, contracts, or bait listed above in your active setup. For you to receive these additional loothunter bonuses, any collection shown would need to be complete, not disabled, and on display in the Exhibition and/or any accessory shown would need to be in your inventory and not disabled.
|| Power type if relevant
|| Seashell |
You can use seashells to purchase the following items from Lady Ayumi Bayoushi: