What makes some snail species particularly interesting to Dr. Chase is their use of 'love darts' during copulation. About one third of snail species manufacture hard, sharp darts which they 'fire' at the object of their affections (i.e. other snails).
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"Poor shooting is commonplace? one third of all love darts either fail to penetrate the skin or they miss the target completely".
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Evidence from mating trials conducted in the Chase lab indicates that snails try to avoid being hit with love darts. Copulating snails are commonly seen jostling, in an attempt to hit but not be hit. But, all is fair in love and war.
