EASTER EGG: On the special features menu, on the fourth page, go all the way down the list to the "Kickin' it in on set" featurette, then click right and highlight the outline of a starfish. Selecting this will take you to a short video of Emma Roberts, Joanna 'JoJo' Levesque, & Sara Paxton interviewing guys in Australia about dating girls.
JMB FX Studio produced the mermaid tails for actress Sara Paxton. The tails were sculpted over Sara's body cast. Foam and silicone skins were produced for 4 tails, each tail was covered in over 5000 scales. A fully cable controlled tail was also produced for the more complicated and subtle moves of the fluke that the suit tails could not perform.
Emma Roberts had to take bike lessons in the part where she saw Raymond and Sara fall off of the bike, because she did not know how to drive with a person on the bike. When they did that Sara actually fell off but she wasn't hurt.