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The issues of monitoring the marine environment are currently receiving close attention due to the importance of climate change issues. It is worth noting that traditional marine monitoring systems take a lot of time, and the collected data have a low resolution. The Internet of Things plays an important role in this area. Compared to wireless sensor networks (WSN), IoT has much more powerful data processing capabilities, providing intelligent object management.

The scope of marine environment monitoring based on IoT include: 1) ocean sounding and monitoring; 2) water quality monitoring; 3) coral reef monitoring; 4) offshore or deep-sea fisheries monitoring.

Sensor nodes are used to determine and monitor environmental parameters such as water temperature and pH, salinity, turbidity, oxygen density and chlorophyll levels, and the collected data is transmitted to the receiving nodes via the ZigBee network protocol or other wireless communication protocols.

The use of digital technologies makes it possible to improve the methods of monitoring and detection of water pollution. The use of specialized applications opens up new opportunities for underwater climate registration, monitoring of marine fauna, detection of natural resources, pipeline leaks, etc.