hitch hiker id

So I got a frag of zoanthid from an lfs and this is what is on one of the polyps, can someone identify it. It’s white and has triangle shape. The one polyp that is covered at the base doesn’t open like the others.

These keep coming up on my rock. I am not sure what they are and if they are harmful to my coral? Any help would be appreciated.

Hi all, wondering if anyone has an idea on IDing this little hitchhiker have asked around on FB groups etc but mainly got people saying aptaisia or majano anemone which I don’t think it is. is there any potential that it’s a paly , mushroom or even a baby rock flower anemone ? bright neon...

Hello, i just noticed this thing growing on the side of my frogspawn coral. It's soft and the striped mouths close when poked at. After some research, I think it might be a sea squirt but I've never seen one that looks like this so I was hoping someone else could help me identify it. Is it...

I have multiple in my tank. Was curious to what they were, not the best picture but they’re pretty small.

It seems to stay on the glass and crawl around like a snail, but has no shell, pearly white, and seeems to have some spots on it. Doesn't seem to be going after my pods at least. Thoughts?

Hey guys, I’ve had this Cerith snail since October - I thought I’d just gotten an ugly boy but over the last month or so his “protrusion” has gotten bigger, and today I just saw that it has a mantle/mouth that is opening? Could anyone help me out with an ID? Thanks all and happy reefing!

This thing hitchhiked in on this rock. Can anyone help me ID it?

Hi New reefer. Is this aiptasia on our newly acquired turbo please? https://youtube.com/shorts/9e1iWOD-e1c?feature=share Thanks in advance. Iain

Hey everyone, Just recently set up a new reef tank with some live rock and noticed this little guy. Shaped almost like a virus cell or an egg sac, you can see it has attached itself to the rock with multiple tendrils to hold it in place, does anyone know what this is? Maybe a sponge? If you...

So this little anem came in on my seaweed for the refugium. No clue what it is (a condy maybe) looks brown in regular light glows red in blue light. Really just no clue. Very long tentacles.

I see multiple things on my glass, my tank was empty for over a month except for all my inverts (no coral just hermits and snails) and I just added some new fish and noticed all these weird critter/things on my glass. Any idea what they are? I’ve had tiny little white worms on my glass for...

Hello guys, I’m new to reefing. Can you help me ID these things; that long tentacles; those white spots on the glass (I think it’s hydroids); these white hair on the live rocks; that thing on the edge of the rock (I think it’s a pineapple sponge). And can you tell me if they are bad or...

Hey everybody! I have an interesting critter to ID. It’s obviously some sort of filter feeding hermit crab. Does anyone know what it is or have any more info on it?

Hi All - was doing my usual Chaeto trim and found a couple critters, any idea on this one?

Not sure how to best describe it, so I uploaded some pictures. Had the mushrooms for a while now and just noticed this thing growing next to it. Tenticles and it glows in the light. No idea what it is or if it should be removed? Appreciate the advice in advance. Happy to take move pictures...

Any idea what I’m working with here? It’s on the glass and there’s nothing similar on/near my montis. Looks almost like a berghia to me, but I’ve never had them. I’ll try and get a better photo of the top.

TLDR: How should I proceed in dealing with this tank now that I know it has parasites but have no idea what they are? Objective: obtain a species ID(s) of the shape/color changing flatworm-like creatures. Pertinent details: similar (but not identical) infestation's crashed 2.5 of my previous...