Many people in Italy would agree with this, I mean that obviously in the Mediterranean is very difficult to see sharks or mantas, impossible to see many tropical species, etc.
On the other hand, for those who come West Palm Beach the Mediterranean itself could look exotic... I mean there are colors and species that you would not find in West Palm Beach. There is a saying here "tropical seas are dressed for carnival, the Mediterranean is dressed for an elegant dinner". That gives you the idea... Many other marine environments could be interesting for those who come from the US: Norway and the killer whales, Ireland and the seals and kelp, etc.