ID 277639458 © Dizain777 | Megapixl.com
Sharing is not just caring, it's also about giving credit - add this image to your page and give credit to the talented photographer who captured it.:
abbreviation acoustic acronym animal audio biological detection distance echo education electrical electronic finding frequency hearing identification identify infrasonic location marine measurement modulation navigation principle protection radar radio science scientific seismic sensor sonar sound soundwave submarine surveillance technology text tracking ultrasound undersea underwater wave card hand technique propagation navigate measure distances communicate detect objects surface water concept