1. Drilling Mechanism in Moon
Snail and Angle wings
By Purnima Sharma
Matriculation number- 13813
Hochschule Rhine Waal University of
Applied University,Kleve

2. Radula in moon snails
• Feed upon other molluscs
• Feeding organ- buccal cavity which includes
radula
• Row of teeth in Radula
• Odontophore support radula

3. drilling mechanism

4. Radula in moon snails
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Secretion of accessory gland
Diameter of hole is 0.53-0.78 mm
Thin shelled specimen
Radula sac protect mouth
Radula is retracted when not in use

5. Angle wings drilling mechanism
• AAM-A and the PAM can rotate the shells
around the dorso-ventral axis
• AAM-P and the VAM can rotate the shells
around the antero-posterior axis
• Feet extend anterior- ventral

7. References
• http://barnegatshellfish.org/radula_02.htm
• A biomechanical model of rock drilling in the
piddock Barnea candida (Bivalvia;
Mollusca), Ralf Nederlof and Mees Muller, J.
R. Soc. Interface, june 2012
• http://www.asnailsodyssey.com/LEARNABOUT
/MOON/moonFeed.php