Kurumi Erika (来海 えりか Kurumi Erika?) is one of the four main Cures in Heartcatch Pretty Cure!. She is a second-year student at Myoudou Academy. Erika's alter ego is Cure Marine (キュアマリン Kyua Marin?) and she reprents the flower daisy. Her catchphrase is "Even if my heart is larger than the sea, I have reached my limit!" (海より広いあたしの心も、ここらが我慢の限界よ！ Umi yori hiroi atashi no kokoro mo, kokora ga gaman no genkai yo!?).