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There's no way to know what the worms are or what they eat from your pics or if they might have been responsible for the death of the other...
It's a sponge, probably in the genus Placospongia. The common name for these species are alligator sponges because of the way grooves divide the...
Worms are interesting, aren't they? :) My official title is Collection Manager, Polychaetes, and the primary focus is taking care of the museum's...
Better pull it out now. There are many small asexually reproducing species in the family Asterinidae. One individual can rapidly turn into a...
It's most accurate to say that it's an asterinid, meaning that it's one of many species in the family Asterinidae. The little ones are very hard to...
It varies from species to species as to whether something is harmless or harmful. The species in the acoel genus Convolutriloba reproduce very...
Yup, I take care of the museum's worm collection & have studied them for many years. Inverts are my passion.
Those particular flatworms are harmless acoels and not anything you have to worry about.
Sea spiders - more properly known as pycnogonids - are mainly predators on other animals. Ones that feed on zoas or other cnidarians are common...
Definitely cirratulids, AKA hair worms and harmless. Flatworms do not have filamentous appendages or rounded bodies. Spagetti worms which belong in...
Everyone to his or her own taste. Personally I regard worms as the apex of evolution. ;D
From Florida? Then it should be Renilla reniformis. Inwall, I think you accidentally had the right combination in the Tank O' Crap. Deep sand...
Sorry, even for a worm expert that pic is just too out of focus.....
Don't bother the mollusc guys. It's a cnidarian called the sea pansy. The genus is Renilla & there are several species. Think of it as a sea pen...
Thanks Don, everyone. There just aren't enough id posts on any one board to satisfy my invert craving so I had to expand onto 3Reef. Besides, if Don...
Thanks, Curt. Checking out boards for invert info is my idea of fun!
They do really look like a species of Calliactis, one of the genera of hermit-associated anemones.
Except that it doesn't appear to be in a tube. :) Many anemones have those warts (= verrucae) down the sides of their columns; in fact they are...
True teddies are Polydectus cupulifera. They're also xanthids & like the more colorful boxer crabs also carry a pair of anemones. Polydectus...
Spawning. FYI, those were both males.
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