This dataset contains video data and snapshots acquired with the camera SMOOVE installed on the TEMPO ecological module (Sarrazin et al. 2007), deployed on the EMSO-Azores observatory from 10/06/2021 to 23/06/2022. Data consist in: - 858 files comprising 6 daily snapshots (Size: 480 x 360 pixels). For an unknown reason, there was no snapshot transmitted after Nov. 11 2021. - 356 files comprising 6 daily 1-minute video sequences (Size: 1920 x 1080 pixels). For an unknown reason, no video sequences were transmitted after August 13, 2021. - The module is connected to the SEAMON East environmental monitoring node and films a Bathymodiolus azoricus mussel assemblage located at the base of the active Tour Eiffel edifice at 1695 m depth since 2010. Position : Latitude 37° 17.334' N, Longitude 32° 16.534' W