Sonar
Dolphins are able to navigate through murky water with sonar and some advanced anatomy. In order to use sonar, humans would need a much larger head to house an organ called the melon, which focused the sound waves emitted. To receive the sound waves that bounce off objects, humans would also need a large, fat-filled lower jaw to transmit the sounds to the lower ear. This unrecognizable dolphin-inspired human was seen in the first episode of the show’s fifth season titled “Inventors,” which aired on April 24, 2007.
