From Bulbapedia, the community-driven Pokémon encyclopedia.
Kinnow Island (Japanese: ハッサク島 Hassaku Island) is an island in the eastern region of the Orange Archipelago.
The island has a large city and a big beach, as well as a port where the Pokémon Showboat was docked. A deserted island nearby is considered to be a part of the Kinnow Islands.
It seems to be the home of Marina. Wild Pokémon sometimes appear on the beach. Off to the side of the beach is a large area of rocks where Marina and Misty had their battle.
Pokémon seen on and around Kinnow Island
||ハッサク島 Hassaku Tō
||From 八朔 hassaku, a Japanese citrus hybrid
||From kinnow, a high-yield mandarin hybrid
||From its English name
||哈撒島 / 哈撒岛 Hāsā Dǎo / Hāsaat Dóu*
||Partial transliteration of Japanese name
|八朔岛 Bāshuò Dǎo*
||From 八朔 hassaku