Garmin 240 User Manual
Page 40
32
On the Water
32
On the Water
Understanding the Chart
Thermoclines
One of the unique features offered by GARMIN is See-Thru® technol-
ogy. See-Thru® technology allows the Fishfinder 240 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
190-00155-10 Rev A.indd
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