Just returned from a long weekend in Cozumel. This trip dove with two different operators, the first one was Aquaworld. If you like fast big boats and being herded like cattle this could be the operator of your choice, I will not be using these folks again. The next day we went with Dive with Martin they are located on the international pier. They had a personal touch, smaller boats, only eight divers and a wonderful crew. I would dive with this operation again and refer divers to them as well. So just wanted to share my opinion about these two dive operators.