Knowing that you've never been gay with another man, you think it wouldn't be bad to do it with Titus. You, and the merman kiss again, just as soon as you start feeling erect. "Where do we start?" You ask. "Put your rear in front of me," Titus answers. "You can have a taste of my trident, as I lick that lower back hole of yours."
You, and Titus float down to the bottom of the ocean, where the wet sand was, and you get on top of him, with your butt in front of his face, and you notice his erected trident sticking out of the slit in his green tail. You place Titus's penis in your mouth, and begin to suck on it, while he sticks his tongue out at your butt-hole, licking it. The two of you spend about 2 minutes making each other feel good, while both of you were still underwater, and breathing. It felt weird at first, but you grow into your new gills.
Suddenly, Titus comes down your throat, filling your mouth with his sperm, and you swallow every last drop he leaks out, until his penis stops, and his cum goes down your body. You then begin to feel weird once you take your mouth off of the merman's penis.