Dolphins have highly intelligent brains similar to humans that allow them to communicate using gestures, sounds, and sentences of up to five elements. Their brains also have an innate ability to detect and navigate using the Earth's magnetic fields in a similar way humans use vision. Dolphins can locate objects by sound from over 100 yards away due to their brains ability to emit 700 beeps per second, far more than a human's 20-30 signals per second.