Route 41

11 Pokémon can be caught at Route 41 in Johto — highlighted on the map below.

Stretching across the sea of western Johto, Route 41 links Route 40 with Cianwood City. At its heart sit the Whirl Islands, four isles ringed by whirlpools that bar entry until the player can use the HM Whirlpool. Most of the islands hold worthwhile Pokémon and items, and a trainer carrying the Silver Wing can reach Lugia through the northeast entrance. In Gold, Crystal, and HeartGold, this stretch of water is the only place Mantine appears.