All of those corals labeled "Maxima" aren't really Acanthastrea maxima. Most of them are A. bowerbanki, some are A. hillae, and then some are even Lobophyllia sp.. All of the unidentified mussidae corals seem to get labeled as maximas also. The real A. maxima get to be about the size of a baseball and are only found around Oman and just like the Omanensis clownfish, the Sultan doesn't let people collect them.