Slender Banana Slug (Ariolimax dolichophallus), Mollusca, The Forest of Nisene Marks State Park, Aptos, CA, US, We saw 21 of these bright yellow banana slugs on our 9.9 mile Westridge Trail redwoods loop hike. They ranged in size from juveniles 3 cm (1.5 inches) long to adults 5-6 inches long. Slender Banana Slug (Ariolimax dolichophallus) is a large, yellow, endemic slug that is found in shaded, moist Coast Redwood (Sequoia sempervirens) forest floor duff. The Slender Banana Slug is the school mascot for UCSC. Conservation Status: imperiled (N2) in United States. These slugs are so well known for the size of their male genitals that the Slender Banana Slug (Ariolimax dolichophallus) carries a name that literally means “long penis” (dolichophallus). Banana Slugs (Genus Ariolimax) Like many slugs, Banana Slugs are herbivores, eating a wide variety of mushrooms and plant material. At up to 10 inches long, they eat a lot. Banana Slugs play a significant role in seed dispersal. If you pick them up, sticky residual slime on hands is not easily washed off. These slugs are so well known for the relatively large size of their male genitals, that the Slender Banana Slug (Ariolimax dolichophallus) carries a name that literally means “long penis” (dolichophallus). Everything you ever wanted to know about Banana Slug mating behavior: (Excellent blog with photos!) The Romantic Lives of Banana Slugs: https://openspacetrust.org/blog/banana-slug/ "Banana slugs are some of the largest terrestrial slugs on earth, reaching up to 260 mm (10.24 inches) when fully extended. ." Interesting and thorough study/comments regarding Banana Slugs by Thomas Everest: Link: https://www.inaturalist.org/posts/32164-a-note-on-banana-slugs Pacific Banana Slug (Ariolimax columbianus) "are the second-largest slug in the world at up to 9.8 inches long, and one of the slowest species on the planet with a whopping maximum speed of 6.5 inches per minute. They get their name from their coloring, simil