Everyone knows this one will run & run
OK my 2 pennies worth !
It is as shiro 85 mentioned, American centric surveys will highlight dive sites easily accessible to the USA but you guys have other World class sites on your doorsteps
tease) - Galapagos, Cocos Islands et al. !
As I live in Asia then I know crazed dolphin has a point (but not East coast Malaysia - sorry) !
Borneo (or Kalimantan if you are Indonesian) has world famous diving (Sipadan, Mabul, Layang Layang, Sangalaki) but not the very top notch, Indonesia waters (as the birth place of life on earth ?) are supposedly spectacular (e.g. one well known common dive site, Menjagan in Bali, has more coral variety than the whole of the Caribbean) and many other sites in Indonesia have unknown / unidentified / unnamed species found on many dives (fancy a shrimp named after your present g'friend / wife) ?
Similans ? Better go further North to The Burma Banks another world class and largely unexplored aquatic paradise.
Everyone in Asia & Europe talk about Palau, PNG, Fiji, French Polynesia, Marshall Islands and even more sites in the Pacific than there are McD's in NY !
Caymens, Hawaii, Bermuda ? Maybe, I've never been there but American freinds tell me they're great ! Whatever, there are more great sites out there than we will ever get to dive - now if I could just find the cash .....
Shanghai Manta
I said swim horizontal - not vertical !