Which one is the best island spot in North America?

I think Cozumel in Mexico is one of the most popular. My diving friends don't stop raving about it.

The Island of Broken Toys,which according to Google Maps is presently sited in an empty shell of a Sears Outlet in Phoenix, Arizona.

Agree with Max. I want to exapand it further.

Mexican caribean is beautiful. I had been there almost every year last 5 years. Cozumel is perfect for diving, but isla mujeres is also marvelous and is not far away. Plus the night life of Cancun, and the peacefull resosrts of riviera maya. Everything on close range, excellent service, professional quality, excelent mexican seafood, the opportunity to visit Chichen Itza.