Thanks for the info.
I am glad to hear that these are a good thing, they are eveywhere!
I have never seen a starfish at the LFS
here, I am pretty sure that they cannot be imported to Hawaii. I'd love to have one though, and will ask about it the next time I go.
I was told that urchins can foul a tank, is this true? I have had one before, and released it into the ocean b/c it got really big, really fast. It started out as small as my pinkie nail, and grew to bigger than a golf ball in a couple of months.