Moon snails typically hunt infaunal prey which makes me think that this abnormally placed drill hole may have something to do with it... Also the shell is highly inequilateral...
#noetiidae
#oichnus
#snailsnack

Happy #molluscmonday
Check out this cool drill hole on a #cowrie
#oichnus
#cypraeidae
#molluscsofsrilanka

Complete and incomplete drill holes on turritellid gastropods
#oichnus
#turritellidae
#gastropoda
#neoichnology
#molluscsofsrilanka

#Muricid drill hole ( #Oichnus simplex) right between two radials of a #Cardites bicolor

#molluscsofsrilanka

Happy #molluscmonday
#cannibalism
Moon snails drilled and eaten by other moon snails
#naticidae
#oichnus

Happy #molluscmonday
Here is a beautiful bittersweet clam with a complete moon snail drilling
#glycymeris
#oichnus paraboloides
#molluscsofsrilanka

Happy #molluscmonday
Here are some beautiful jewelbox shells from Sri Lanka. As a bonus, one has a drill hole
#molluscsofsrilanka
##chamidae
#oichnus

Happy #TracefossilThursday
Here are some delicious #chione clams that I'm sure our #moonsnail buddies enjoyed feasting on. Some also have postmortem polydorid borings.
#fossilsofflorida
#oichnus
#naticidae

Here is another instance where the driller tried to avoid drilling over ribs. This saves time(=energy). The ribs and the furrows of these clams
#Cardites tend to widen ventrally. But the drilling snail could not completely avoid the radial ornamentation
#oichnus
#molluscsofsrilanka

Happy #MolluscMonday
#Drilling predation is a costly behavior thus predators tend to develop specific behaviors that ensures a successful and energetically favourable attack. Here is one example where the predator drilled between radial ribs reducing the time (=cost) of drilling
#oichnus

Here is a beautiful #cardiid with an incomplete #Oichnus paraboloides drill hole.
#cardiidae
#molluscsofsrilanka
#marinelife 🦑

Snail shells with holes made by a predator

Cannibalism
Moon snails drilled by moon snails
#oichnus paraboloides
#drillingpredation