what are these?

This anemone was gifted to me and the gifter got it because it was ‘pretty’ but has no idea what it is. I’m afraid to put it in my tank with my fish. My research is telling me it could be harmful to my fish but wanted to ask some experts before I decide what to do with it. They got it from Petco...

Got them as a free coral during a tidal gardens live sale in October of last year. I took the photo from my phone and adjusted some of the contrast and other qualities until I got a color I believe represented what I’m actually seeing. Any ideas on what type this is? Also taking suggestions on...

I have this cool looking mushroom but when I was taking it off the plug the Little Rock that the mushroom was on had a little buddy… and idk what it is… the mushroom is on the left and the small like flower shape or idk its on the right hand side

Anyone able to ID these? First is a fleshy like lump with a red mouth like feature attached to my live rock, idk if it’s always been there but as some of my sea squirts fell off from pesky crabs is when I’ve noticed it. Bellow the bubble tip nem surrounded by the red. I’m unsure about this...

Curious what these are? They look oval shaped and smaller than a grain of rice. Look brownish and move around the glass. Have a V shaped end to the body. Mainly on the glass but probably on the overflow and elsewhere. A good amount of them. Tank has been setup with live sand and live rock from...

I’m assuming that they’re some type of snail but does anyone know what exactly?

My tank in the last few days has been getting these tiny tan-brown ish circular creatures on the glass… they don’t really move, just sit there with their appendages or whatever flowing in the current… are they harmful? Does anyone know what they are? I can’t find anything and don’t even know...

So I'm dealing with dinos. What are these and how to I rid them? Also there's got to be a pod of some sort and some thin things. Help to id these please.

First time buying coral. I have it in a quarantine tank. Ive had it 5 days and came home from work today to see this on the side of my coral. Any ideas as to what it is? Dont recall seeing it last night. Not even the brown dots it retracts into when i get close to it with tongs.

Need help identify what this is. Is it some type of worms or possibly eggs? Harmful? What should I do to get rid of it? They are curly white and more with the water flow.

Hey all, Not sure if this specific matter belongs in here, but I need an Egg ID. Came back from work to see a stringy white substance covered in eggs coming out from the zoas right near where my Damselfish and Clownfish live/host the anenome. Just wanted to see if anyone could tell me what they...

Don’t know what these are but found one growing on a rock and one growing on a Zoa Plz let me know what they are and if I should remove thx

Hello, First time poster here. I'm having trouble identifying a hitchhiker that just showed up on my trochus snail within the past week. No new additions to the tank in a month which is part of my confusion. See attached photo but they look like white fuzzy cones. Any clue what this could be?

Hello everyone, I’ve seen these little white critters all over my system and they are EVERYWHERE. I want to think they’re a type of copepod but I’m not entirely certain. I tried my best to get a good picture. Thanks for any identification!

What zoas are these?? Been trying to find out!

Picked up a new acro at the lfs they didn’t know the name of it, anyone can help me ID it?

Hello everyone! just thought I’d start with water parameters…. They are all good. I have noticed these little lumps on my hammer coral and over the last week they have grown bigger and began to grow what look like small tentacles. Are these new heads growing?!