Snorkeling at Isla de la Juventud or Cayo Largo in Cuba to see coral

[maria316]

I am very interested in seeing spectacular and healthy coral. I have read there is good coral at Isla de la Juventad, specifically Punta Frances National Marine Park, and Cayo Largo. Is this true and can you see it by snorkeling? Which island would you recommend?

I will be flying to Cuba via Cancun and snorkel in the Cancun area if that would be better.

Thanks