Armed with sonar that is much more powerful, dolphins can detect things as small as a three - inch [8 cm] ball 400 feet [120 m] away and possibly even farther in quiet waters.
Dengan diperlengkapi sonar yang jauh lebih dahsyat, lumba - lumba dapat mendeteksi benda - benda sekecil bola berukuran delapan sentimeter sejauh 120 meter dan mungkin lebih jauh lagi di perairan yang tenang.