Join 3reef now to remove this notice and enjoy 3reef content with less ads. 3reef membership is free.
A kind of algae, Valonia (bubble algae). It can get out of hand, although it looks pretty cool. Cheers, Don
Yep, green one is a kind of calcareous algae, Neomeris. I'll have to defer to the experts on the white one. Cheers, Don
I meant to follow up on this. Did you guys read all of Shimek's article? He says, "UNDER NO CIRCUMSTANCES SHOULD YOU ADD "SAND-SIFTING" ANIMALS...
I'm pretty sure that's not a nudibranch, but I have no idea what it is. If LeslieH is still around, she could almost certainly ID it for you. GL!...
In the wild, there are lots of snails associated with deep sand beds :). Most of them spend their time in the upper two or three inches though, and...
Here's a link to a couple previous climbing clam questions, with what may be similar clams (family Arcidae):...
Can't tell much from your pic, but there are a handful of bivalves that can climb the glass. None of them are harmful, of course. There are a...
Yup, they definitely are Scypha (pineapple) sponges. Some people don't like the way they look, but they don't hurt anything. Cheers, Don
I'll have to defer to Jason on the abalone ID if those are holes in the shell rather than papillae on the mantle. Does the shell have holes?...
#3 is a Stomatella snail, harmless algae eater. #4 are Acoel flatworms, usually not terribly bad, but nobody wants to be overrun with them. I'll...
Pretty cool! There's a similar tropical species from Tonga that grows to over 4 inches, although I've never seen one turn up in a tank. The plates...
Chappy, The last snail is a small abalone. It's either Haliotis jacnensis, H. dohrniana, or one of the closely-related reef species. It should...
Hey Guys, The slug is a Thuridilla species, one of the algae-eating sacoglossans. It's harmless. The starfish looks to be a regenerating Linckia...
Good. Your black one is a Stomatella, by the way. He's a good guy. Cheers, Don
I guess I know a little more. The adult sizes range from 11 to 33mm, and once the "teeth" on the bottom of the shell are formed, it's not going to...
OK, here's about all I know: (from Full text of "Opisthobranch" ) Vol. 16 (2) : 10 OPISTHOBRANCH February 1984 Notes from...
The chances that it's eating something you like are a lot greater than that it's eating something you don't want. Some similar species eat Montipora...
If it's a sipunculid it is, and it looks like one. Sure is in a classic guilt-by-association position, though.
Very cool, I've found them in the Pacific, but never seen them on the Texas coast.
Well, you're doing some good research in narrowing it down. Juveniles are always harder to ID than adults, even if you have really good macro pics...
Separate names with a comma.