Marine structures is a multidisciplinary academic and engineering research field dedicated to the design, analysis, construction, maintenance, and environmental interaction of structures situated in, on, or near marine and other aquatic environments. This domain investigates structural performance under complex environmental loads (e.g., waves, currents, ice), geotechnical foundation stability, material durability in harsh conditions, and the broader ecological and economic implications of infrastructure essential for maritime transport, offshore resource extraction, coastal defense, and renewable energy generation.