The second talk (Ron Chase) was very much evolutionarily oriented. I really enjoyed this angle. However, many of the important questions had not been answered, yet. The talk was about the sperm competition and potential for cheating in simultaneous hermaphrodites: with each animal fertilizing the other and with several matings going on sequentially, how can each animal assure that its genes get transmitted preferentially? Some snails have developed a system of darts, where they shoot each other with calcified darts which transmit certain substances which in turn promote sperm competition such that the animal hit well by a dart from the animal preferentially sires its offspring with sperm from this animal. Cool stuff!