irina - "No good" is not what I would say. I had a great snorkel in E Shoal, and even saw a really cool eel, but I have snorkeled in much better places.
If planning a trip to the Caribbean and Snorkeling was Priority 1 - I would not recommend Anguilla.
Beautiful Beaches
Nice People
Great Food
Ultimate Relaxation
Music
Now we are talking Anguilla's strong points.