SnailsMollusk Decision Matrix (PDF | 15 kb)
USDA. Animal and Plant Health Inspection Service.
"The Mollusk Decision Matrix may be used as a guideline for educators when deciding which snails or slugs to use in their classroom. The matrix lists ten snail and slug species and the specific states in which the USDA will authorize interstate movement. Contact your State Plant Regulatory Office or the Pest Permit Evaluation Unit when in doubt."
All About Snails
Provides facts, lessons and learning activities about garden and pond snails for teachers and children. Grades K-6.