That would make it 356 - one of the closed dive sites is off Little Cayman!
Thanks for the correction, Babylon is on the north side of the island but you may be able to dive it with the End End dive ops. Ocean Frontiers lists Babylon as one of the dive sites that they sometimes dive, see below. We dived it when we did the Cayman Aggressor trip and it was amazing!
55 Dive Sites on the East End of Grand Cayman in the Cayman Islands
Babylon
Noted as one of the Top 10 wall dives in the Caribbean. Just mention the word Babylon to any Cayman Divemaster and you will notice a sparkle in their eye. This is the kind of dive is saved for their day off or to really impress experienced divers. Babylon is one of the most remote sites on Grand Cayman and is located on the North Wall, half way between Rum Point and East End. Babylon is most frequented by dive boats on 3 Tank Safaris around the island or by live-a-board vessels. Do not confuse all the hype about the beauty of this dive site and its remote location as to making it an advanced dive. Once you get there, Babylon is a very easy dive, the top of the Cayman wall starts between 35-45 feet. There are large sand patches on top of the wall and excellent shallow reefs for those scuba divers that do not want to venture too deep. For scuba divers who want a true vertical experience, they will find it on the wall at Babylon. The wall topography changes from a sheer plunging wall face to cascading sheets of plate coral and large pinnacles jutting in to the crystal clear waters of the Cayman Trench. While you are captivated by the pure vistas of Babylon do not forget to witness the Cayman reef inhabitants. The wall teems with schools of Chromis, often interrupted by Barracuda, Stop-Light Parrot fish or Queen Angels. The wall is decorated with thick outcroppings of Black Coral, Purple Sea Fans, Barrel sponges and a great variety of other tropical marine life.