Biologist Daphne Soares discovered that they are actually tiny pressure - detecting mounds that allow these reptiles to detect small disturbances on the water surface around them.
Bioloģe Defnija Sorsa atklāja, ka patiesībā izcilnīšos ir spiedienjutīgas šūnas, ar kurām šie rāpuļi sajūt pat niecīgu ūdens virsmas sakustēšanos.