Complex interactions of physical, biological, and chemical parameters affect coastal marine ecosystems over a variety of scales, highlighting the need to conduct observations at spatial and temporal resolution relevant to informing understanding of system processes (e.g., biogeochemical cycling) and implications for human-ecosystem interactions (e.g., fishery health, coastal flooding hazards, ocean acidification). Rapidly advancing miniaturization, networking, and lower power demands are driving innovative capabilities for in-situ sensors and instrumentation, particularly those that enable collection of data at higher frequencies or deployment of larger number of sensors for spatial coverage. Sharing both successes and challenges is critical to enable insights to be harnessed across oceanographic disciplines. This session welcomes scientists and engineers of all flavors to discuss recent advances in in-situ sensors and instrumentation technologies, in-situ sensor network design, unique sensor deployment strategies, data analysis techniques applied to high-resolution sensor data, and in-situ system validation mechanisms. This session is intended to be highly interdisciplinary and welcomes sensing projects in biogeochemical, biological, chemical, and/or physical characteristics of marine systems, particularly those highlighting success in and methods for real-time data collection and for drastically increasing the resolution of collected we are able to collect to characterize estuarine, coastal, and near-shore environments.