Eastern North Carolina's only waterpark just got WETTER! WILDER! SPLASHIER! AND SAFER! Now open at 100% capacity for the summer season. H2OBX offers 30 rides, slides and attractions for the entire family to enjoy.Eastern North Carolina's only waterpark just got WETTER! WILDER! SPLASHIER! AND SAFER! Now open at 100% capacity for the summer season. H2OBX offers 30 rides, slides and attractions for the entire family to enjoy.