Feather dusters

[Robert59]

Why do they pulsate looks like they are dancing there's no music in the tank?

 

[JedClampett]

They are catching small particles out of the water for food such as phytoplankton

 

[Robert59]

Cool thanks

 

[SantaMonicaHelp]

Perhaps they have a new iBubble music device for underwater swimming?

-JN

 

[sbash]

there's no music in the tank?

How can you be so sure?