From the Super Mario Wiki
Retrieved from "http://www.mariowiki.com/index.php?title=Dark_Sea&oldid=1989844"
Dark Sea is the eleventh level in the Dark Realm of Jewelry Land, in the game Yoshi's Safari. The level consists of a beach that Mario and Yoshi must traverse. After getting through hordes of enemies such as Cheep-Cheeps, Bloopers, and Koopa Paratroopas, Mario and Yoshi will eventually reach the end of the beach and fight the Koopa Troopa Sub.