Echolocation

You can perceive the world by creating low/high-pitched noises and being attuned to their echoes. For the duration, you have blindsight out to a range of 35 feet. The noises you produce are unable to be heard by most creatures aside from dragons, creatures with echolocation, or other creatures with hearing-based blindsense or blindsight. This ability can't be used while deafened, and nothing can be detected in an area of silence.