Giant Alien Snails Attack Miami, Though They're Not in Much of a Rush

MIAMI—Floridians have grown accustomed to invasions of exotic creatures, like the Burmese pythons slithering throughout the Everglades. But residents here are especially grossed out by the latest arrivals: giant African land snails that grow as long as eight inches, chew through plants, plaster and stucco, and sometimes carry a parasite that can infect humans with a nonlethal strain of meningitis.

The gastropods are among the most dangerous in the world, agriculture officials say. They each have male and female reproductive organs and can lay 1,200 eggs a year, allowing them to proliferate rapidly. Thousands of them have infested at least five separate neighborhoods in the Miami area.

Homeowners who discover the creatures in their yards often find them disgusting. The snails' engorged bodies extend far from their shells, and they eat so ravenously that they leave trails of excrement on walls and the ground.

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By ARIAN CAMPO-FLORES