Hello! Just wondering if these hit hitchhikers are good or bad!

One of many reasons to have a SW tank...because you will never know what surprises can come out. Well, today I found a baby starfish on my glass. It surprised me had no idea at first, on how it got into my tank. I figured it was most likely just sitting in the my LR until the right parameters...

Hey i have been watching this thing appear and disappear over the months and it has grown, I am no expert but is this a starfish?

Are these harmful?

I noticed today when I woke up that all my chocolate chip starfish's chips were gone. He has a fleshy white stuff where they were, and also the tips of his legs has the same slimy white fuzzy stuff. What could this be? I have tested my water and ph is 8.4/nitrate 0/nitrite0/alkelinity is...

Sorry you have to fix the link (delete space from htt p), but this is my first post. Is this a bad starfish? Should I get rid of it? Thanks for any help!

Hey everyone, Currently cycling my 14 gallon Bio-Cube. I've been cycling for about a week now. I noticed two little things that look like starfish that are cruising on my live rock. they are tiny little things. Their coloring from the top is white on the outer edges and a browish/green color in...