Dolphin sonar can penetrate up to three feet through sand and mud with resolution significant enough to distinguish between a dime and a penny. Due to this power, scientists believe that dolphins can view the inside of our bodies similar to a sonogram performed on pregnant women.
Dolphins do appear to be fascinated with pregnant women, honing in on the unborn fetus. Furthermore, they often focus on individuals’ specific areas of impairment, as well as places containing tumors.
Many times people who swim with the dolphins have felt themselves being scanned. Bypassing the ears, the sound resonates in the bones, traveling up the spine. This blast is delivered through water, which is 60 times more efficient than air for sound transference, on a body that is three-quarters fluid. It is believed that ultrasound resonance within the cerebrospinal fluid is especially important due to the fluid’s key influence on the brain and spinal cord.