The Marine Biodiversity Observation Network Pole to Pole of the Americas (MBON Pole to Pole) conducted two workshops on 27-31 March 2023 and 22-26 January 2024 in the Argentinian Patagonia aiming to enhance capacity for long-term monitoring of rocky intertidal communities in Argentina and Chile by applying novel and easy-to-use methods for biodiversity observing. In these workshops, participants received training on the collection and processing of benthic photo-quadrat imagery and their analysis using open-source artificial intelligence applications. Workshop participants included park rangers, undergraduate and graduate students and scientists. These training activities covered theoretical concepts of rocky shore ecology and field exercises. The workshops promoted collaboration and knowledge exchange between users of biodiversity data and ecologists resulting in the development of a standardised biodiversity monitoring protocol for rocky intertidal communities available in the Ocean Best Practices System of the Intergovernmental Oceanographic Commission of UNESCO. Participants learned to identify dominant species and functional groups (e.g. macro-algal taxa, molluscs, barnacles) commonly present in these habitats and their zonation patterns along elevation gradients, capture high-quality benthic photographs using quadrat frames and cameras provided by the MBON Pole to Pole and compute percentage cover estimates of observed taxonomic groups using open-source automated classifiers. Emerging recommendations underscored the importance of actively involving park rangers in survey efforts and facilitating communication with decision-makers managing Marine Protected Areas. These activities were endorsed by the UN Decade as contributions to the Marine Life 2030 programme towards increasing capacity in the implementation of coordinated, standardised and sustained biodiversity observing efforts in the Americas.