I went diving with Mark and another friend who was also staying at the Hammock Plantation Hostel (which Mark also owns). He is very knowledgeable in what he does and is someone who is more concerned about developing good divers rather than making money off of divers. No matter your experience level, I think anyone would benefit from diving with him and his operation.
Aside from Mark’s knowledge and passion for diving, diving in El Salvador provides you with the unique experience to dive in a volcanic crater lake, Lake Ilopango. This is an experience by itself that you can’t find in many places.
I would certainly dive with them again!