Free-swimming Limpet Trochophore (image) University of California - Berkeley Caption This shows a scanning electron microscope image of an 18-hour-old trochophore of the owl limpet. Trochophore are ciliated, free-swimming larvae that feed and drift in search of a good spot to set down roots before metamorphosing into their final and very different form. Credit Eric Edsinger-Gonzales, UC Berkeley Usage Restrictions None 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.