FURVERT!

3:4 aquatic arm_warmers armwear bdsm belt blue_eyes blue_hair bondage bound breasts cephalopod clothing coleoid duo ear_fins featureless_breasts female fin genitals hair hands_above_head hands_tied hi_res humanoid jewelry looking_at_another looking_at_partner merfolk mollusk octopodiform octopus offscreen_character open_mouth penetration purple_body purple_scales restrained restrained_by_tentacles rock sandentwins scales split_form sucker_(anatomy)tattoo tentacle_in_vagina tentacle_penetration tentacles underwater vaginal vaginal_penetration vulva water