Cone Snails Use Insulin as a Weapon
But a new study by Dr. Helena Safavi, a Research Assistant Professor in the Biology Department at the University of Utah, has identified a specialized form of insulin as one of the key elements that comprise the cone snail venom.
The insulin is absorbed through the fish gills and quickly lowers its blood glucose level. This makes the fish disoriented and easier for the cone snail to eat. It is the first reported use of insulin as a predatory weapon.