"Look very carefully at the tips of the cerata, especially the biggest (white-tipped) ones close to the midline, and you will see they are coiled tightly inwards like young fern fronds. The uncoil rapidly and wave around when the individual is disturbed."
Comment from Richard Willan
Look very carefully at the tips of the cerata, especially the biggest (white-tipped) ones close to the midline, and you will see they are coiled tightly inwards like young fern fronds. The uncoil rapidly and wave around when the individual is disturbed.