Help ID Cucumber (Pics)

[Vitaly]

Hey gang...I was hoping you can help ID a cucumber that hitchhiked with some live rock that I added to my tank. I have been searching the web and found all sorts of cukes...but not one the looks like this.

Thanks in advance...
Vitaly

 

[graveyardworm]

I just bought one just like it, nice find. Sorry dont know what to call it but I'm sure I've seen it on at least one livestock vendor site.

 

[graveyardworm]

Lokking around alittle bit, I would say tiger tail although I thought tiger tails were relatively smooth.

Holothuria sp.

Check this out, scroll down for pictures, check the genus Holothuria. Sea cucumbers