Deep water currents are formed deep below the surface of any water body.
Basically, these deep water currents are affected by the temperature and salinity (density) of the water. Deep below any water body , the density is high and temperature is low thereby producing deep currents.
The speed of deep currents is low, while the speed of surface currents is very high.
Deep Ocean Currents flows are driven by thickness and temperature angles. Thermohaline flow is otherwise called the sea's transport line (which alludes to profound sea thickness driven sea bowl flows).
These flows, called submarine waterways, stream under the outside of the sea and are escaped quick identification.
Based only on the DNA, which populations do you think live in closer proximity to each other? What do you expect to see when comparing genes of lions that live closer together?