Figure 8.

Schematic representation of BFT predation on mesopelagic resources in the Strait of Messina during full moon and new moon. In both lunar phases, the strong currents foster upwelling phenomena and, then, passive transport of mesopelagic food resources. On one hand, during full moon the high lunar irradiance increases the success of BFT visual predation (a). On the other hand, during the new moon the vertical movements of mesopelagic resources are larger and reach shallower water layers, making food more readily available for BFT (b).