How do animal use ultrasonic sounds to find their way or to catch food
The way dolphins find food is by Echolocation. Echolocation means that an animal finds food by using sounds to find things, like bats
you go watching for them
Search Google, I got 445 000 hits for "ultrasonic vibration".
There is some info at http://www.keyence.com/products/sensors/ultrasonic/ultrasonic.php. They are a manufaturer of them.
panisonic
Usually dusk I find them on trees
I think all you do is find a quiet spot and think about the animal you want to change into. Some people make sounds or move like the animal.
They both sound intresting but you schould do animal biology because you get to find out more about the animal. If not just take zoology cause that sounds intresing to.
Several websites offer free downloads of many different sound effects in MP3 format. These sounds can be used for personal projects such as videos. Some sites that offer animal sounds include Sound FX Center and AudioMicro.
used to find distance between moving or stationary object
it is a bat as it hears the echoes to find its way, small insects and can also hear earthquakes and other sounds before any other animal can
Ultrasonic and X-ray investigations