Can anyone ID this ?

[Paveman]

Seen quite a few of these pop up recently. Picture shows one in foreground and one in centre of the shot.

I'm guessing some kind of filter feeder but can anyone give a positive ID ??

 

[cmor1701d]

Sorry, Can't help, but I'm also interested in what that is.

 

[Paveman]

After a bit more research today I think they may possibly be 'truncates' or 'sea squirts' ??

Pretty hard to tell but looks similar at this link
http://www.earthlife.net/inverts/ascidiacea.html
Anyone really know ?

 

[Paveman]

Okay, I'm 99% sure I have this now. Searched through the Internet for about an hour this evening and pretty sure it's a Polycarpa Pigmentata - otherwise known as a sea squirt.

Amazing animal and apparently very closely related to human's ? Has a heart which beats about a hundred times with blood flowing in one direction. The heart then stops for a while and when it restarts the blood flows in the other direction.

Can this be true ?

 

[RYANLAWRENCE]

Definitely not closely relates to human haha but it is not harmful to your tank. It's just a filter feeder. It's quite interesting

 

[RYANLAWRENCE]

*related