Thermoclines - Garmin Fishfnder 160 Owner's Manual

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Understanding the Chart
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Thermoclines

One of the unique features offered by GARMIN is See-Thru® technol-
ogy. See-Thru® technology allows the Fishfinder 160 to see through
thermoclines and helps locate fish where they live, and fish love the
thermocline.
A rough defi nition of a thermocline is a break in water where the water
temperature changes faster than the water above it. The thermocline usually
displays as a gray level as shown below.
Thermocline