The fish finder sends out ultrasonic waves that travel right under the boat. If they hit a school of fish, very weak echoes will go back to where the ultrasonic waves were sent.
The reflected sound is turned into an electrical signal, which is then sent to the fish finder's receiving circuit. The receiving circuit boosts the weak signals, and the processor unit uses those signals to make images that are shown on the screen.
Because of this, the image will show up on the color LCD. On the screen, reflections that are stronger are shown in orange or red, and reflections that are weaker are shown in green or blue.
Large schools of fish or rocks on the seabed send back stronger signals, so they are shown in a reddish color. A small school of fish or rocks on the seabed sends back weaker signals, so they are shown in a blueish color.
The color presentation can show clearly what is going on under the sea.
A fish finder helps you find a school of fish and gives you information about the water depth, where the school is, and how the seabed is doing.
This page is continuously updated. You can also click on "refresh" to view the possibly modified page.
Garmin 010-01872-00 STRIKER 5CV with Transducer, 5" GPS Fishfinder, CHIRP Traditional And ClearVu Scanning Sonar Transducer, Built In Quickdraw Contours Mapping Software
$329.99 (as of September 5, 2024 07:16 GMT +02:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)
Bzumperyz 000-14414-001 Extension Cable 10' Replacement Part for Lowrance Use with TripleShot/SplitShot Transducers and Hook2 Series Fishfinder
$31.99 (as of September 4, 2024 02:53 GMT +02:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)
0 Degree Livescope LVS32 Transducer Pole Mount Kit for Panoptix LVS32 Transducer, Trolling Motor Shaft Mount for Panoptix LiveScope System/Ice Fishing Bundle 010-12676-15 0101267615
$19.86 (as of September 4, 2024 02:53 GMT +02:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)
010-12676-15 0 Degree Livescope Pole Mount Compatible with Garmin Panoptix LVS32 Transducer
$19.99 (as of September 4, 2024 02:53 GMT +02:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)
Humminbird 710274-1 XNT 9 HW T HELIX Dual Spectrum CHIRP with Temperature Transom Mount Transducer, Black, Standard
$79.63 (as of September 5, 2024 07:16 GMT +02:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)
Transducer Cover Transducer Protective Cover Soft Protection Made of Neoprene Compatible with Humminbird MEGA 360 Great for Boating
$13.99 (as of September 4, 2024 02:53 GMT +02:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)
Livescope Pole Mount for Boat - Transducer Pole Mount - 010-12676-15 0 Degree Livescope Pole Mount for LVS32 Transducer, Livescope Ice Fishing Bundle, Livescope System
$14.39 (as of September 4, 2024 02:53 GMT +02:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)
EDSRDPLT Transducer Cover Transducer Protective Cover Soft Protection Made of Neoprene Compatible with Garmin Livescope LVS32 for boating
$13.99 (as of September 4, 2024 02:53 GMT +02:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)
3 PCS Fishing Graph Cover Straps - Keep Your Fishing Graph Cover Secure During Travel with Easy-to-Adjust Fish Finder Bungee Straps
$25.99 (as of September 4, 2024 02:53 GMT +02:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)
Fishfinder Cover for Lowrance, Humminbird 7 inches Models（Black）
$10.99 (as of September 5, 2024 07:16 GMT +02:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)
Lowrance Fish Finder Sun Covers
$22.42 (as of September 5, 2024 07:16 GMT +02:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)
Lowrance SplitShot Skimmer Transducer, fits Lowrance HOOK2 Fish Finders,Gray
$74.54 (as of September 5, 2024 07:16 GMT +02:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)
Venterior Portable Rechargeable Fish Finder Wireless Sonar Sensor Fishfinder Depth Locator with Fish Size, Water Temperature, Bottom Contour, Color LCD Display
$85.99 (as of September 5, 2024 07:16 GMT +02:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)
Brocraft Telescopic Transducer Pole with Deck Mount/Telescopic Transducer Pole Transducer Mount/Universal Live Sonar Transducer Mount/Livescope Mount
$269.99 (as of September 4, 2024 02:53 GMT +02:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)
Kayak Fish Finder Mount,Marine Kayak Transducer Mounting Arm with 1.5" Ball Base Mounting Plate, Kayak Boat Marine Electronic Mount for Fish Finder&Transducer Compatible with Scotty, Garmin, Lowrance
$53.99 (as of September 4, 2024 02:53 GMT +02:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)
Fishfinder Cover for Lowrance, Humminbird 7 inches Models（Black，Pack of 2）
$16.99 (as of September 4, 2024 02:53 GMT +02:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)
Lowrance 000-0106-72 Transom-Mount 83/200 kHz Skimmer Transducer with Built-in Temp, Black
$56.02 (as of September 5, 2024 07:16 GMT +02:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)
Garmin 010-02550-00 Striker Vivid 4cv, Easy-to-Use 4-inch Color Fishfinder and Sonar Transducer, Vivid Scanning Color Palettes
$179.99 (as of September 5, 2024 07:16 GMT +02:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)
LUCKY Portable Fish Finder Handheld Kayak Fish Finders Wired Fish Depth Finder Sonar Sensor Transducer for Boat Fishing Sea Fishing
$82.89 (as of September 5, 2024 07:16 GMT +02:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)