How do Animals Have Sex Underwater?

The first challenge for underwater mating is just getting everyone’s parts lined up.
 “Unlike a terrestrial environment, where there are physical barriers,” says Orbach, of Dalhousie University in Nova Scotia, the ocean offers no leverage. And since cetaceans — dolphins, whales and porpoises — have “no appendages to hold each other in place,” she says, body position and angle are important.
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