Hammerhead Sharks (IMAGE) Florida Atlantic University Caption Most research on hammerheads has focused specifically on their laterally expanded heads and how they use it to see and smell as well as its effects on hydrodynamics and sensory efficiency. While much is known about the variations in their electroreception, olfaction and vision, very little is known about whether or not their shape differences affect their swimming performance. Credit Phil Colla Usage Restrictions Credit: Phil Colla License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.