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Post #29 - 99sf's sponge -- Most of these small cryptic sponges are harmless. They rely on being hidden below or between rocks to keep away from predators rather than chemical defenses. Post #30 - Ibn's Pod. Nice! There are thousands of these in every feeding niche - predators...

Post #23 - xinumaster's polychaete - Mollusc eater, family Oenonidae, most likely genus Oenone, most likely species Oenone fulgida. These are nearly indestructible so the best option is to catch it if you don't want it. I prefer polys to molluscs so I'd buy steamer clams & feed it. The...

Wow, thanks for all the pics & comments, that's great! But (could you sense the "but" coming?) I have to cancel due to a family member's health problems. I was hoping that I could still fly up for the day which would be a really welcome break but I just can't leave. Hopefully we can...

Unfortunately I have to cancel due to a family member's health problem. I was really looking forward to this talk. It was going to be a new format - a presentation based on club members' specific invert pics submitted in advance rather than a general "and this is an X" slide show. I was...

Man oh man oh man, I can't tell you how many smart ass replies immediately came to mind after reading that. You have obviously confused me with someone else entirely!

I am SO using Jon's photo in the slide show! :D

And remember....NO corals or cnidarians. I'm a know-nothing noob when it comes to them.

Take the best pics you can & post them along with the closest image match you can find on the web. That way I can see what you have as well as what you think it is. ;) If they're not the same I'll talk about how to distinguish them. Hmmm.... maybe I should point out some of the worst LFS...

These little slugs only eat spirorbids. Any other type of fan worms would be left alone. Do you have fish & crustaceans? They're more likely to be the culprits.

They do evert their proboscis to suck in food. Could that be what you saw? Here are some photos of a related species feeding - http://seaslugsofhawaii.com/species/Berthellina-delicata-c.html

Me too 'cause I'm not sure what I'm going to talk about! :bigsmile: I want to try something new rather than the standard "slide 187 is species X". I'd really like to get pics of inverts that are of particular interest to BAR members, stuff you want to buy, already have, or found as hitch...

:D Not quite. The secretory glands are in the skin, usually on the back & along the sides. Side-gill slugs like Berthellina secrete the chemicals as a defense against predators. They don't use it to acquire food. It's quite funny to see a fish scoop up then spit out one of these, kinda...

Good or bad depends on whether you like spirorbid polychaetes or not. They're the small fanworms with tightly spiralled white calcareous tubes. This is an odd little nudi called Vayssierea felis that only eats spirorbids. Once all the spirorbids are gone the felis will die from...

(Sorry... duplicate post. Bad computer, BAD!)

It depends on the species. Some will only eat one prey species while others are generalists. Reported prey items include various sponges, anemones, other cnidarians, molluscs, polychaetes, echinoderms, tunicates, & more, but actually the preferred food for most species is unknown. The...