We have little information on the Cayman Islands diving scene. It is likely that the dive sites in Bulgaria are located off the coast in the Black Sea and possibly some inland sites as well. The generally calm nature of the sea will mean dive transporting will be easier.
Although this is considered new territory for diving this country see's a lot of tourists now. It is likely that the dive sites are busy too. In high and low season this is likely to be a popular place to visit.
Bulgaria is the home of 0 diving organisations.
The Caymans are in the Tropical of Cancer and therefore on the northern cusp of the equator. Therefore seasonal weather is radically different in that most of the weather is from the equator. Expect near perpetual hot summers.
The trend for diving in the Caymans is almost certainly going to be resort-based with little or no club based activity.
Hyperbaric Chambers are available in the event of an emergency. As yet we do not have further details.