● For decades, scientists could not understand how dolphins could swim at the speed of nearly 25 miles (40 km) an hour. The animals simply did not have enough muscle, the scientists thought.
● Teadlastele oli aastakümneid mõistatuseks, kuidas suudavad delfiinid ujuda ligi 40 - kilomeetrise tunnikiirusega, sest nende arvates pole neil loomadel selleks piisavalt lihaseid.