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Weird thing in my tank -11/19/07
Here's an interesting thing I found in my tank. Well, not with a picture since my digital camera is garbage. So I'll try and describe it.
I found it crawling on my Zoanthid colony. It looked like a whitish/very faint green snail. But without a shell! I'm guessing some type of hitchhiker sea slug or something. But it was pumping white liquid into my tank for a few minutes before I could remove it and I'm hoping it wasn't any poison or whatnot!
<More than likely, it was spawning.>
It almost looked like it was releasing fertilized eggs or something into the water but I made sure to take it out. Unfortunately, I couldn't isolate it so I just got rid of it.
<Hmm... ok.>
While I'm sure that's not nearly enough for an ID, I'm at least hoping I could be in the right ballpark and that I was right in removing it
since I had no idea what it was releasing! Haha.
<I'm sorry, there are just too many gastropods/slugs/etc. that might fit this description. There are Zoanthid eating Nudibranchs, but they're usually bright orange and yellow. You could browse here to see if you find it:
http://www.seaslugforum.net/>
- Jon
<Best,
Sara M.>

Re: Weird thing in my tank, invert. ID f'  -11/19/07
I kind of figured that it would be impossible to give me even close to an ID, haha. Just a late night email to you guys with something I'd never seen in my tank before. And yeah, it definitely was NOT a bright color. It was a very drab white/greenish color. And hopefully it wasn't detrimental if it was spawning! Though if I see another one, I will no doubt take a photograph.
- Jon
<No worries, did you see anything on the slug forum (http://www.seaslugforum.net/) that looked similar at all? It's a fun site to look through anyway. -SM>

Re: Weird thing in my tank -11/19/07
It slightly resembled some various Aglajid species, actually. I mean, not 100% resembled but slightly looked like them, anyway!
<Hmm, well, all I can suggest is that you, next time, maybe don't be in such a hurry to bump these things off. I know we all hear the horror tales of some slug or bug destroying whole reef tanks-- but they're mostly camp fire stories. There are very few (if any) critters which, if you see one, you need to kill it on-spot right away. There's almost always time for a quick ID first. ;-)
Best,
Sara M.>