Two pregnant women in the U.S. state of Hawaii has kealakekua b. attracted swimming with dolphins swim with them. 30-year-old Brianne Droscoski and 35-year-old Jen Groark is a good friend, when they go to sea together, we found that there are many dolphins came near them. One of them apparently attracted their protruding belly, on the side of their swimming. Some scientists believe that dolphins can sense into the stomach of the fetus, and even identify the sex of the fetus.