your searpent star is probably hiding somewhere in the sand. diggin the color of the starfish. Good luck with the sea apple. They don't havve the best track record of staying alive. Though some people got no problems with them
i miss my sea apple now! its been over ten years since ive kept salt and a sea apple would be one of the reasons I would get back into it. i remember seeing my first one over ten years ago, that sucka was alittle bigger than a football!
I had a sea apple once apon a time, thing was about the size of a softball, ate non-stop. LFS told me i didnt need to use de-chlorinator, they said the salt i added would kill chlorine and of course everything did crappy and most things died. tried everything and finally decided to try dechlorinator, and wouldnt u know it my tank is absolutely pristine now, three anemones but no sea apples.