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The diving, training, support and sale offered on this web site is conducted by IANTD CCR O2ptima Instructor Andreas W. Matthes living in Playa del Carmen, Mexico. Matt is working and diving out of the ProTec Dive Center's & Advanced Training Facilities ProTec Playa in Playa del Carmen and ProTec Tulum in Tulum, Mexico.

Training is available either here in Playa del Carmen, Mexico or any other place on this planet. Here you can learn as well about CCR cave diving in the beautifull caves of Mexico. When traveling to training locations other then Playa del Carmen the students are responsable for travel, accomodation as well as diving related expenses, apart from the training fee.

Please contact Matt by e-mail under info@ccroptima.com if you have any questions or for further details.

This web site was designed and is maintained by Andreas W. Matthes. All images and text are copyright (c) 2007-2011 by Andreas W. Matthes. Written authorization is needed to use any text or images from this web page.