I'd love to get a less blurry photo but it's pretty small, and I have to zoom way in to even get the shot. Here is a video of it:A less blurry picture would help...does it move or retract?
Both of those are smooth bodied where this one seems hairy. Honestly it looks closest to the "hairy crab" a ways down on this page.It certainly is a crab of some sort. Searched and found this - https://www.saltwaterfish.com/product-anemone-crab-white
Or maybe if your a Harry Potter fan - https://reefbuilders.com/2017/02/15/harry-potter-reef-crab/
Also, from my search I noted people say if it has red eyes and black tips on the claws it's BAD.
Welcome to TRT, Drechi! For future reference, it's better to start your own thread with questions for your tank, that way you're sure to get answers directed to you and your issue. As far as the snail, just leave it - if your tank is cycling it might not make it if it's alive, and if its already dead it's just feeding the cycle.Hi. I just set-up my saltwater tank a few days ago with a dry rock and live rock. I just realized today that, what is called a hitchhiker was on the sand bed , a small black snail with spots. I don't believe it's alive. Should I remove it or leave it. Still waiting for tank to cycle. Not even close yet only 5 days into the whole process and and the live rock yesterday. Thanks