invisable tiger tail cucumber

I thought I'd try something new last week and so I bought a tiger tail sea cucumber for my 120 gal. I think I saw it once 2 days after putting it in my tank poking its front out from underneath a small rock burried in my sand bed. I haven’t seen it since then and I was wondering if this is normal? Everything else in my tank is doing fine so I doubt it could have died as I'm told they can do some serious toxic damage to ones system.
 
I've got a quick update. I finally did see the front of the cucumber poking out a bit last night around 3:00am, this is the first time I have seen it all week.
 
mines about 18" and tiger tails are one of the few species of cukes that r not toxic when dead or stressed.

nate
 
<a href=showthread.php?s=&postid=7549159#post7549159 target=_blank>Originally posted</a> by natep206
mines about 18" and tiger tails are one of the few species of cukes that r not toxic when dead or stressed.

nate

Are you sure about this?
 
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