Seaside Cavern (PMU 7)

Seaside Cavern is a water type version of Tiny Grotto it has pokemon that introduce stat inreasing moves to the player and has a total of 3 floors with a boss.

Pokemon
Lotad +80 Recruit Rate Moveset: Harden

Slowpoke +120 Recruit Rate Moveset: Curse Tackle

Items
Seaside Key - Floor 2

Boss
Kingler Unrecruitable Moveset: Vicegrip Bubble

Spoils
50 Poke, Common TinyMushroom, Uncommon Mystic Water, Uncommon Shoal Shell, Rare Water Stone, Very Rare