critter id

I originally thought this was red bubble algae, so quarantined the coral, but I’m not so sure anymore. Looks kind of like a macro to me at this point. Thoughts?

So one of my snails has 3 opaque lumps on it which looks like has white stuff inside it. Looks like a sponge or lump of eggs or something.

Found this bright yellow worm looking thing attached to a piece of caleurpa. Two days later there a few of these yellow spots, but they all seem to be on the tips of the caleurpa. Any ideas?

I’ve noticed over the past few weeks these spores attaching to the dark and low flow areas of my tank. Specifically in the sump on the bottom portion of my skimmer and in the plumbing box up too in the DT. Should I be worried? Seem to be harmless thus far, but I’d like to get in front of it if...

Hello! I've recently had this growing in my tank and more are popping up everyday I was thinking an anemone of some sort but starting to think it isn't due to how many there are!

These little white balls just appeared in my tank I noticed them this morning. Anyone know what they could be?

Got these things hanging around the corner of my tank. Can't tell if they're hydroids or something else. Can anyone help ID?

Looks like some sort of a pod but its huge? Roughly 5mm body and a couple more with the antlers. When its swimming about its straight like a stick and then when i hit it with some flow it curls up into a c-shaped ball. One of the good guys? Can I throw it into the fuge?

Went to go feed my yellow tang and goby in my quarantine tank and I noticed these little black worms all over the PVC pipe and on the rocks does anybody know what these are? It's kind of hard to get a picture of them because they're so small but I attached some

Any ideas It's about 1/4" in diameter, very small @ReefSquad

So I'm not entirely convinced this is even a critter or hitchhiker, I've had this ricordea in my tank for awhile now and haven't added anything new in over a month. Found this random green growth on the rock my mushroom is on. It almost looks like a coral forming? I have no idea. Anybody have...

Hey all, I just finished my weekly reef roid feeding and noticed my sand bed moving. Upon closer inspection I noticed all these tan little snails with their trunks up looking for any globs of food resting on the sand. I’m not too worried about any hitchhikers in my tank as I’ve already found a...

Some kind of worm coming out of this tube, thought was peanut worm orig in store and we tried to remove it. No idea what this is

Hi all. It seems like Aiptasia looks different in the several threads I’ve been looking through. I have a 20g RSM and going through last days of cycling. Just want confirmation as to what this is. Came out of nowhere since yesterday. It’s the only one that I see. Thanks in advance for helping a...

Hi all, just dipping an Acro colony and noticed this guy deep down in there, trying to get a ID, difficult to get a clear shot! Any sure answers? At first i thought it was a decorator crab but its too chunky.

hey guys i just bought a couple of zoa colonies and noticed these tentacles tucked in between today. theres about 6 tentacles that all seem attached to one thing somehow? i just want to know if it’s harmless or not! heres a video of it moving and an image attached. thanks!

Hello. After my new tank had an ick outbreak at the end of April, I started my fish less cycle. As I looked more closely in my tank a couple days ago I noticed this guys wandering my rocks. As I’m new to the saltwater hobby, and just had my outbreak, I’m a little superstitious worrying that he...

Hi everyone, I got some new live rock about 3 weeks ago and I've been watching it for critters and such. I think ive identified a clam worm (its almost 3 inches long and is iridescent) I'll attach a photo or two of him as well for verification. My concern however, is another worm...or I think...

Hello I don’t believe this was here the other day Lights are out now but when the lights are on it stays fully extended. Just want to make sure it’s not dying on me. Been in the tank 3 weeks haven’t seen any problems. And yes the coral was dipped before putting it into my tank.

Just noticed these little worms all along one side of my tank they are all living in my sand bed and making little tunnels along my glass not really harming anything just curious what they are. Any help IDing these little guys is much appreciated just wanna learn as much as I can!

Hi everyone, I've had a weird fuzzy like object on the tip of my acropora coral for a long time now. Doesnt seem to grow or move. It's almost fuzzy looking, and a deep red color. Any idea what this could be? Sorry for the picture

Need help with I'd on this little guy.

Hello all, I have been watching this little guy grow on my love rock for a little while now. I was wondering if someone could tell me exactly what my little guy is. He is more pink in color around the center. Any help is appreciated, thank you.

I’m thinking it might be a slug or some sort??

It's gray and definitely has some little feelers coming out of it. Moving really slow. I noticed a bunch of white spots the other day. Could it be a baby snail? Nothing new has been added to the tank except two peppermint shrimp, that i was told were pregnant... or full of eggs. I took a little...