Rule 34 Dev - 1girl air_bubble anthro aquaphilia asphyxiation barefoot belly_button big_breasts breasts bubble byondrage casual_nudity diving drowning feet female fetish fluttershy fluttershy_(mlp) friendship_is_magic hasbro high_res holding_breath imminent_death monochrome my_little_pony nipples nude nudity peril plantigrade_anthro solo solo_female story_at_source swimming tunnel underwater|1080642