The growth of human activities along coastal regions has prompted the creation of Marine Protected Areas (MPAs), where stringent regulations or outright bans on human activities are imposed. Yet, without vigilant monitoring, these areas can become magnets for unlawful behavior. Monitoring human activity at sea is usually facilitated through the Automatic Identification System (AIS), a vital tool for real-time vessel identification and collision avoidance. AIS data provides crucial information about vessel positions (e.g., longitude, latitude, speed) and voyage specifics, including vessel types, but it can be disconnected at any time and it is not mandatory for certain vessel types. Therefore, monitoring these MPAs presents several challenges, particularly due to the limitations of visual surveillance. Because sound travels further and better than light underwater, passive acoustic data is a major candidate to monitor such activities. For this reason, in this study, we first create a comprehensive database ...