Monday, May 19, 2014

Topic: Cone snail venom controls pain

Cone snail venom controls pain

Hidden in the mud, the cone snail Conus purpurascens lies in
wait for its victims. It attracts its prey, fish, with its proboscis, which can
move like a worm, protruding from the mud. Once a fish approaches out of
curiosity, the snail will rapidly shoot a harpoon at it, which consists of an
evolutionarily modified tooth. The paralyzed victim then becomes an easy meal.
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