File:Eukaryotic-opportunists-dominate-the-deep-subsurface-biosphere-in-South-Africa-ncomms9952-s5.ogv

English: Supplementary Movie 4 Finsch Diamond mine horizontal borehole at -880 meter. The horizontal Finsch diamond mine borehole contains walls well covered in a different kind of biofilm in comparison with SVideo 1 and 2 and is situated approximately 8 meters inside the borehole past the metal casing. The biofilm on the rock face looks crusty and moves less in the current unless when viewed in close up. This is best visible on the left side close to the camera as it perturbs the biofilm/water at time interval t+22, 30, 33s. It is also clear during movement of the camera setup through the borehole biofilm releases and temporarily obscures the flashlight and camera one can clearly see pieces floating in the current and being evacuated fairly quickly behind the camera (t+59, 67, 93s and t+113s ). This floating behavior is typical for the biofilm observed. The resolution was 1820 x 720 at 30 fps and recorded as an MOV file. Per journal instruction the file was converted to a MOV format (H264) and deinterlaced using WinX video converter. No other changes were made. For scale the diameter of the borehole is 7,4 cm.