This country we have little information on the diving scene. Therefore it is likely that the dive sites here have little or no scuba divers present and are in good condition.
Argentina is the home of no diving organisations.
Argentina is in the Southern Hemisphere and much of it is Tropical / Sub Tropical so seasonal weather is much different to Northern Europe. However this also means that, due to the summer here being Europes winter, you can go 'winter diving' from the UK and end up with summer conditions in Argentina.
Broadly speaking the trend for diving in Argentina is unknown. Resorts may operate a 'pay and dive' system using PADI as the framework.
Hyperbaric Chambers are available in the event of an emergency. As yet we do not have further details.