How do bottle nosed dolphins Feel things around them?

they have sonar which means they send out something like a sound impulse. After that they listen to hear how high pitched or low pitched the noise is, and feel the ripples of the waves. Depending on that, they can tell how close or how far a way something is from them. Okay, happy?! Don't copy paste man/girl, its not cool and its against the law and the good people of the lapd are cracking down on people who plagiarize. it happens every day, dont be a victim.