Anthe would like to see the two forms of Shellos to get inspiration for new fashions.

The Request

After you have unlocked the Cobalt Coastlands, talk to Anthe to accept this request.

Catch Shellos

One form of Shellos can be found in Obsidian Fieldlands, and the other can be found in Cobalt Coastlands.

Reward

After you show Anthe the two forms of Shellos, Anthe adds new items to the clothier's lineup.