Black Gwen Tennyson from Ben10, (((submerged underwater))), ((in a large underwater cavern)), her hair flows in the water, large saggy breasts, voluptuous, flat chested, at the swimming pool, looking at viewer, smiling, blushing, topless, lace swim skirt, her skirt flows underwater, sitting deep in water, ((completely underwater)), pantieless, penis visible, stretching out her small flaccid circumcised penis, holding her penis, playing with herself, flaccid penis stretch, balls, masturbation, lifting breast with left hand, rear view, from below, (((thalassophobia)))