The Seas Legend Request Guide
You can catch Manaphy & Phione
Where To Find The Seas Legend Request in PLA
Where To Find Request
From board in the professor's lab when you reach Fifth Star Rank.
How To Complete The Seas Legend Request in PLA
How To Complete
This request requires 3 pokemon, a Hisuian Qwilfish, Mantyke, and a Buizel. Next, you will want to evolve your Qwilfish into a Overqwil by using Barb Barrage while in the strong stance 20 times. After that head to the Coastlands Camp and rest at a campsite until evening time. Next, travel directly through the archway appearing out of the water. After a short cutscene, head to Seafoam Cave. Once inside, you can begin the fight and capture Manaphy.
You can find and catch Qwilfish, Buizel, Mantyke, Manaphy, Hisuian Qwilfish, Overqwil at the locations listed below in PLA.
Cobalt Coastlands (Aipom-hill/">Aipom Hill, Bathers' Lagoon)
Cobalt Coastlands (Tranquility Cove, Lunker's Lare, Islespy Shore)
Quest 66 The Sea's Legend: Requires that you have Have Buizel, Mantyke, and Overquil In Your Party, Surf through the two pillars at the Coastal Campsite in Cobalt Coastlands, in the evening time, Then go to Seaside Hollow for Encounter.