Sandy basin tall grass habitat
Bubbly Basin habitat #008
To make sandy basin tall grass in Pokopia, place 1 Sandpile and 4 Seabed tall grass together. It attracts Corphish.
Both the basin tall grass and the pile of sand are hiding spots for Pokémon.
Items to place
Sandpilex1
Seabed tall grassx4

Pokémon it attracts
PokémonRarityTimeWeatherRegions
A Pokémon only appears once its region, time and weather line up. Find any of them by condition in the spawn finder.