So, if you got certified in a quarry, you can only dive in a quarry??? Lol... I did most of my open water certification dives in the ocean - but in a sheltered, shallow (40 ft bottom) cove inside of the reef - so can I only dive in a sheltered, shallow ocean bay inside of the reef? I did Peak Performance Buoyancy via a combo of pool sessions and quarry dives - so can I only use that knowledge/experience to have good buoyancy in pools and quarries?Quarry dives are fine for training. But your only qualified within the limitations of your training. So if you did your courses in a quarry you should get extra training before jumping into the ocean. People don't but ideally they should. They are not trained to dive in the sea.
Beyond buoyancy/weighting differences in fresh versus salt water, exactly what extra training beyond jumping in and doing a dive in the ocean would prepare one to dive in the ocean versus a quarry? To me, training provides you the basic fundamantals you need to dive safely and knowledgeably. Beyond that, it is largely the experience gained by frequency of diving and gradually introducing diving in progressively more challenging conditions that develops you as a diver.