i think its a Tridacna squamosa . the shell seems to fit on the link you posted. however the coloration is not verry bright and vivid. i guess i need to tak a pic of him and post it. he is about as big as a base ball. with purple and brown colors, the purples are not bright, more like brownish purples. fall color purples. thanks for the help, and if i get my digi cam back soon, ill post a pic of him