Is is what mating looks like?

[swill]

I've got a female and male Reidi Seahorse and am wondering if this is what mating looks like? They are normally all black (or at least they were once they got home from the petstore)

Here is the video:

http://www.youtube.com/watch?v=ZDRgErvQF0U&list=UUqIVaIU0ks7Hj3DoeRwte1g&index=1

Thanks for the help :)