Garmin fish finders make the ocean and its finned residents much less mysterious. There are several models of fish finder by Garmin, each with its own list of features and purposes. Whether you're a deep sea commercial fisherman or a weekend hobbyist, a fishfinder can help you haul in more fish with every casting. Garmin produces two main lines of fish-finding GPS units: the Garmin echo series and the Garmin GPSMAP series. Of the two, Garmin echo fish finders are the more simplistic of the two. Operating more like a traditional Garmin fishfinder than the GPSMAP, the Garmin echo features wide scanning angles and dual beam transducers on a grayscale or multi-color display. The Garmin GPSMAP fish finders, on the other hand, are compact chart plotter devices. The GPSMAP combines basic fishfinder functionality with a Garmin GPS navigator, allowing you to receive up to the minute weather updates, navigate through tricky areas, and see exactly where the fish are. Whether you choose the Garmin echo or the Garmin GPSMAP, you'll get state of the art GPS technology wrapped in a compact, effective Garmin fishfinder.