Highlight How Do Mermaids Mate? (Inside Siren) Syfy Insider Exclusive Create a free profile to get unlimited access to exclusive videos, sweepstakes, and more! Sign Up For Free to View How Do Mermaids Mate? (Inside Siren) C'mon, you've always wondered. The cast of Siren get into it in this backstage look at Season 2, Episode 4. Watch the Full Episode
