It's not quite Furries

Maybe it's Slipperies?

Aqua Tails sells mermaid tails for humans to swim around in, and to pose a la Arial on beaches and rocks and what not, only it's really really creepy.

http://aquatails.com/

The simplest and cheapest "monofins" start at $159.99.
"For the serious mermaider" they have "realistic" tails for $599.99.

I'm confused over the use of the word "realistic" here.
realistic |ˌrēəˈlistik|
adjective
representing familiar things in a way that is accurate or true to life : a realistic human drama.

Does this mean mermaids are actually real?
Don't forget to complete your look with something from their "Sea Form & Jewels" section.

And then there's the very perplexing existence of this:

http://www.dailydealster.com/

I can't imagine why they'd ever be on sale. Where's the Groupon for this? I'm gonna hurry and get mine before the 2 day discount expires.