Echolocation

[Mark Zuckerberg]

Finding your spouses lips in complete darkness of a bedroom after making kissing sounds.

[Greta]

The location of objects by reflected sound, in particular that used by animals such as dolphins and bats.

[Michiko]

a process in which animals, for example bats (= small animals with wings that fly at night) , find their way in the dark by producing sound waves that echo (= are heard again) when they are reflected off an object: