help pls

Someone please tell me what’s wrong with my snail! I have two (turbo?) snails, one is acting completely fine! There’s plenty of algae in here for them too. This one was upside down in the sand last night, seeming to try and grab onto the rock. I moved him next to a rock so he could easily get...

Hey y’all. I’ve been trying to figure out what kind of urchin I have for a week and I can’t seem to get any answers. Google certainly hasn’t helped, but I probably am not looking for the right thing! I really would like to know what type he is so that I can look into the best practices for care...