Invertebrate
Pacific Banana Slug
Ariolimax columbianusAlso known as Banana Slug, Northern Banana Slug
Pacific banana slugs glide across the forest floor of North America's Pacific Northwest, consuming fallen leaves, fungi, and debris to fuel ecosystem nutrient cycling. Their vibrant yellow coloration often features dark spots, while their sticky mucus coats their body with a mild numbing agent to deter predators. During dry spells, these giant gastropods retreat beneath cool logs and secrete a protective slime cocoon until damp weather returns.
TerrestrialDetritivoreMoisture-Loving
—observations
—countries
—peak records
Not EvaluatedConservation statusIUCN Red List categoriesLCNTVUENCREWEXNot Evaluated — not placed on the risk ladderRed List categories, explained →
Diet & preyDecomposing Leaves, Fungi, Lichens
Predators
- Garter Snake
- Raccoon
- Pacific Giant Salamander
ThreatsHabitat destruction, extreme drought, forest fragmentation, agricultural chemicals
HabitatsPacific Northwest coastal rainforests, moist coniferous forests, damp ravines
Life span1–7 years
Classification
- OrderStylommatophora
- FamilyAriolimacidae
- GenusAriolimax
- SpeciesAriolimax columbianus
Range data is not available yet.
Interaction riskLow
- Low
- Moderate
- High
- Very high
- Why interaction risk is low
- Safe to observe at a normal distance.
Responsible observation
- Moist Conditions: Search under decaying logs, wet leaf litter, and mossy stream banks during rainy mornings.
- Skin Protection: Avoid touching their skin, as salt and oils on human hands can damage their sensitive slime coating.
Canopy Partner (c) Miguel Vieira, some rights reserved (CC BY), uploaded by Miguel Vieira · cc-by
Predator Wilson44691 / Public domain · cc0
Close Relative (c) Alan Rockefeller, some rights reserved (CC BY), uploaded by Alan Rockefeller · cc-by
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