2girls, bikini, bikini_top_only, blonde_hair, blue_eyes, blue_hair, breasts, cephalopod_eyes, closed_mouth, eating, fish, fish_girl, grey_hair, holding, horns, looking_at_viewer, mackerel_(fish), marlin-chan_(ruteko_(ruko220)), medium_hair, mermaid, monster_girl, multicolored_eyes, multiple_girls, nautilus_(animal), navel, original, red_bikini, ruteko_(ruko220), skewer, sling_bikini_top, sweatdrop, swimsuit, tentacle_hair, underwater