The UltraNav
II can detectthis invisible layerinthewater,
butthe
sensitivity
will probably have to be turned
up to see it.
42 35
830
780
SURFACE LAYER
ABSORBS HEAT
FROM THE SUN 770
EPILIPQ1NION
760
e 750
THERMOCUNE
MOST PRODUCTIVE
ZONE FOR FISHING
VARIES IN DEPTH
DUE TO
WIND,
CURRENTS,
560
500
470
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