worm in sandbed

Just saw these tubes and trails on my rock and sand. Then I saw this worm in the sand WHICH HAD SAND GRAINS GOING THROUGH ITS BODY. Do I need to be worried?

Got you — here’s a smoother, blog-ready version that keeps your tone but cleans it up and flows better: I’ve noticed these worms in my sand bed from time to time during the day, but lately I’ve been having issues with some of my corals. Because of that, I started checking my tank at night to...

Hello reefers ! I’ve seen a funny spawning, I think, of spaghettis worms. I’ve photographed only one, but others worms where outside too, making the same stuff, for a few minutes and then hiding. Am I right with my assumption?

Um hi, first post here So I was looking into my 30g all in one salt water tank and I found some little worms in there. Can anyone help me ID them? Ngl, I’m kinda spooked at the moment trying to figure out how they got there. I’ve never seen any bigger ones.

I have these “worms” in a few spots in my 55 gal reef not sure what they are or if they are a pest or not.

I noticed these weird worms? In my tank they eat food if I put it down there. They've recently been popping up all over the tank. What are they? And are they harmful?

I was readjusting a little log we have and when I picked it up all I saw was a stomach? Part. I literally jumped back, it surprised me. Does anyone know what it is and is it safe for my fish, crabs, snails, and coral/mushroom corals? They're my main concern obviously and I just want to make sure...

I have been setting up a small NPS tank with my Fluval Evo 13.5 and recently noticed a small red object in the sand bed. At first I thought it was just a left over piece of Gracillaria or something but I took a closer look earlier because I noticed it had moved and realized it has lots of little...

Found a red slimy worm that has stringy extensions could be a spaghetti worm but never seen one red. Sifted through the sand to see if there was more and didn’t see any so far. This one found going after my torch.