We departed at 6:00 a.m. from Portosín port. We headed towards an unnamed seamount located quite near the Villar de Fuertes mount. We want to get there early to avoid the north winds that pick up in the afternoon and force us to stop working. The seamount is very steep on its southern slope. Here, we find a sandy bottom first, then a rocky bottom harbouring a wide variety of species: holothurians, sea urchins, sponges, various types of fish, including a monkfish on the prowl, streaked gurnards, scorpionfish, bluemouth rockfish, etc. The rocks seem to be completely covered in brachipods and red, white and even green jewel anemones (Corynactis viridis). And a lot of black coral (Antipathes sp.), which has practically disappeared from all of its shallow habitats because it is harvested to make jewellery. We also spot a dead common dolphin, in advanced state of decomposition, covered in sea urchins taking advantage of the meal. After we finished with the ROV, we submerged the CTD, a machine that allows us to measure salinity, light, chlorophyll, turbidity and water temperature.