by Zoë Pollock
Please consult the dolphin:
It turns out that dolphins, while highly intelligent, are somewhat deficient in the "passionately embracing their lover" department. To overcome this, they have evolved to have a prehensile penis (like a monkey’s tail) that rests below a flap of skin until needed. If a male is lucky enough to persuade a female to give him the time of day, he uses it to not only inseminate, but also hold on.
The Dish 