slug

I just cleaned a bunch of algae out of my sump and found these critters that look like tiny smooth (no hair or bristles that I can see) caterpillars. I’ve never seen these. In the photos they look flat, but they aren’t. They are nice and chunky. Any help on an ID is appreciated!

Hello, need help id the small critter I found in the tank. It looks like some kind slug, with reddish color. Reef safe or not?

Does anyone know what this slug looking red spec is. Just pulled it off my recently introduced Maxima clam shell. Little horns or eyes poking out from its head. Thanks everyone!

Came in on something I bought at a swap. Didn't notice until next day so I'm not sure what it was on.

Yes, I know I have Cyanobacteria. However, I don’t know what this giant sea slug is…

im a huge fan of gastropods, and i would love to have one of these amazing creatures in my living room, and i know that they are somewhat photosynthetic, stealing genes from algae, but are the blue ones AS photosynthetic? the blue ones are absolutely gorgeous, but all the other gene-stealing...

I found this in my refugium. Some type of slug, but I did not put any animals in there, so it was surprising to find. I have some Troccus and Astraea snails in the main tank. Should I be concerned?

So any idea what this? It moves like a slug with something that looks like a integrated shell. I didn't don't buy it so must have come on my live rock. Good or bad?

I'm having an issue with my colony of Zoanthids they start to demise :( I had no idea what could possibly cause that some of the polyps won't open. Suddenly I've found tiny slug-like creatures pinkish in blue light. Does anyone have an idea what it can be? And how to fight it???

Hey everyone so i just noticed this guy crawl from the top of my rock work all the way to the bottom pretty fast. In thank I only have 4 corals and 2 clown fish and 3 bubble bee snails in a 13 gallon. Started the tank in January and put coral in march 1st and fish march 29th. This is the first...

Found this guy on a frag plug from a recent coral purchase, any ideas? very small, black soft body, no visible shell.

Happy Super Bowl Sunday! I was getting through some weekend maintenance before the big game and noticed this black object embedded in some Zoas. Didn’t think much of it until I noticed it had little antennas. I’ve never seen a black worm/slug like this before. Any thoughts?

So I noticed a new slug/snail in my tank that I most certainly have never seen. I haven't bought any new coral or rock in the past few months so I was surprised to see this. It almost looked like it could be a baby forming it's shell but I've never seen a baby snail so I have no clue. Any help...

What is this white slug that came out of my rock??

The Odd creature ever ;Doctor ;Doctor ;Muted ;Doctor ;Doctor Found this one on corals I bought from LFS. 1st I saw it on one Gorgonian Sea FAN and it was really strange, because the string coming out of there was over 30cm long. The issue I can have I don't DIP that particular Gorgonian...

I have tried to get good photos for months since I saw the first one. I only see them when I disturb the aquascape but at night they come out in force. They're about a centimeter or less and bright solid yellow. Today I got a lens kit for my phone. I couldn't take a picture because I couldn't...

Please help me identify. I'm very new with this. Thinking it could be a sea slug

So I know the picture is blurry but I can’t get a great shot. Found this little Slug looking thing in my tank today out of nowhere and wondered why if anyone can identify it and tell me if it could harm my aquarium?

Hello fellow Reefers, This is my first time posting and need some help. I found this guy in my display tank next to a hard coral that looked like it had bees nibbled on. I put it in my sump for awhile before removing it to the toilet. Now I notice about what seems to be babies from this guy...

Sorry about the quality but taken with my phone at night with a flashlight

What is this???? About the size of a nickel Disappeared when I turned lights on.

Found this guy, haven't added anything new to the tank in over a month and he just appeared. Seems to be cleaning and minding his own business. He looks like a snail with no shell. (I think we call those slugs? Lol ) I am not putting corals or anything in here so is he safe to stay or should I...

Plz I have a reef aquarium and would like to know if there is any coral/anemone safe sea slugs which are visually appealing and only eat algae/uneaten food.

Hi guys, I just noticed this little creature appeared in my tank! It's probably a hitchiker ( i didn't add anything in my tank for over 2 months though?) but anyways. I would like to know what is it? I think it looks like a sea slug? Or a snail? I have no idea so i'm uploading this video and...