Cozumel is about 28 miles long and 10 miles wide. All of the good diving is located on the west side of the island, where the second largest reef in the world exists. This reef starts near Cozumel and continues all the way south to the country of Belize.
We stayed at the Fiesta Americana, an all-inclusive resort located around the middle of the island on the west side near Chankanaab Park. The weather was great the entire time (around 85-90 degrees) and the water temperature was around 81 degrees for diving.
Cozumel is known for its crystal clear, turquoise waters. Hurricane Wilma visited the island last year, and the island is still recovering from the aftermath. Because of the hurricane, most of the reefs had a coating of sand on them, and some of the sea life was missing.
The south end of the island is where most of the deep dives are located, including the famous Devil's Throat dive. Jay and I dove this area, but some of our best dives were in the shallow areas that contained alot more sea life. We did have encounters with Eagle Rays and a few large Nurse Sharks.
We did skip diving for two days. One day we visited the mainland to see some of the Mayan ruins at Tulum, and another day we deep sea fished.