ACOUSTIC INDEX OF FISH RELATIVE TO WATER COLUMN DEPTH (Y-AXIS) AND DISTANCE ALONG TRANSECTS (X-AXIS, NOTE DIFFERING SCALE FOR EACH PLOT BASED ON EFFORT). THE COLOR OF EACH 5 M DEPTH BY 0.5 KM GRID CELL REPRESENTS THE LOG-TRANSFORMED MEAN NASC DUE TO ORGANISMS WITH SCATTERING PROPERTIES OF FISH WITH SWIM BLADDERS. NOTE THAT EFFORT IN MONTAGUE STRAIT COVERED ONLY A FRACTION OF THE SURVEY AREA IN 2017 AND 2018. BELOW BOTTOM CELLS ARE REPRESENTED IN GREY.