Today’s fish finders produce near photo-quality images of the bottom and structure. Not only can anglers see below, but the most advanced fish finders capture the action 360 degrees around the boat.

That’s where today’s sonar device underwater search equipment comes into play. Rather than blindly sending divers into pitch ...

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In 1490, Leonardo da Vinci put an ear to a tube and stuck the tube into the water to listen for faraway ships. Today, the science of underwater acoustics has developed into a fine art called sonar.

Here, fishy, fishy! Every angler has muttered this phrase at one time or another, but beckoning fish can only get you so far—it helps to know with certainty that there are actually fish in the general ...