My Swim Coach is a Sex-Crazed Martian! (Alien Tentacle Breeding Erotica‪)‬

Jennifer and her teammates have been crushing on their new swim coach since the day he first showed up at their high school. All of them agree that he may just be the single hottest man alive. What none of them suspects is that he isn't actually a man, but an insanely horny extraterrestrial with a special thing for young, fertile Earth girls...