search for: halocline

Hi, I know that according to plot theory, one should not have two y-axis. It is just that in my field, we are often depending on plots where water depth is plotted in one y-axis and other parameters such as salinity on the other y-axis to see where the halocline (the depth where the two layers of water are not mixed) is located. I have many other examples. To publish, it is required of me to produce such graphs. Is there still no possibility to do this in ggplot2? I need the same style of all my graphs for my publications and it is a problem if I have to...