White Sand Star - Bad or Strang signs

[gobytron]

likely starving...

I had the unfortunate experience of keeping a small red starfish for almost a year before it started to go through a process as you have described.

arm by arm, it just disintegrated.

I found out after the fact that the starfish was primarily a sponge eater and it had only taken it the year to eat all that my system had to offer.