Clown Fish playing with bubbles?

[Kizmar]

Anyone have an idea as to what the clown fish are doing in this video? They do this several times a day. I notice because I can hear little popping noises like water drops almost. What I see, is both of them at the top of the tank there biting at bubbles or something.

[ame=http://www.youtube.com/watch?v=iEic5WcknC8]Clown fish blowing bubbles - YouTube[/ame]

 

[ErinCahir]

Clowns are weird. They look healthy, so it's not something I'd worry about.

 

[chichimom79]

My Midas Blenny likes to poke his head out of the water. I feel like they are thinking, " I know there is something on the other side of this water line!"