Garmin Fishfinder 100 - Manual (Page 40)

32
On the Water
Understanding the Chart
Thermoclines
One of the unique features offered by GARMIN is See-Thru™
technology. See-Thru™ technology allows the Fishfinder 100 to see
through thermoclines and helps locate fish where they live, and fish love
the thermocline.
A rough definition 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
100 On the Water.p65 2/16/00, 10:08 AM 32