In MPA-ADAPT project in the framework of T-MedNet, temperature is being recorded in situ by Stowaway Tidbits, Stowaway Tidbits v2 and HOBO Water Temp Pro v2 autonomous sensors and recovered annually or semi-annually by divers usually before and after the summer period. The temperature sensors are set to collect hourly records. In general, sensors are placed every 5 m from 5 to 40 m depth at each study site by fixing them to the rocky substrate. To fix the sensors we fill natural holes with putty allowing to set up PVC clips or screws which are used to fix the temperature sensors. (In some cases the temperature sensors are also attached to the buoys chains or cords).