Experimental data on the visibility depth of a white disk Zd and the optical index of water type m for surface water of the Atlantic Ocean are analyzed. The comparison made between the Zd and m maps of the Atlantic Ocean with those for the dynamic depth D at the 100 m level indicates that the large values of Zd and small values of m occur under conditions of anticyclone circulation. Turbid water is typical of the cyclone circulation, which is associated with the ascent of low-layer water enriched with nutrients. The empirical equation Zd = Zd(m) derived allows estimation of Zd to be done from the values of m measured remotely in the visible spectral region from a ship, airplane, or satellite.