Banana Slugs
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40 free Banana Slugs trivia questions with answers — trivia quiz, new questions added Oct 2026.
Banana slugs are the bright yellow giants of the Pacific forest floor, and almost everything about them is stranger than it looks. Their slime behaves like no ordinary fluid, their bodies are put together in surprising ways, and their love lives have made them famous among biologists. This quiz turns the best banana slug fun facts into questions: how they breathe, see, eat and defend themselves, where they live, what hunts them, and how a slow, shell-less mollusc became a beloved university mascot and an official state symbol. It suits curious nature lovers, students and teachers, and anyone who has met a banana slug on a damp trail. Every answer comes with a short explanation, so you will finish knowing far more about these animals than when you started.
30 of 40 questions with answers and explanations. Play the quiz
Q 01Which Quentin Tarantino film shows hitman Vincent Vega wearing a UC Santa Cruz Banana Slugs T-shirt?
Pulp Fiction
Pulp Fiction gave the mascot its biggest screen moment in 1994, eight years after UC Santa Cruz students voted the banana slug in.
Q 02Which animal did UC Santa Cruz's chancellor back as mascot before students voted in the banana slug?
Sea lion
Sea lion was the administration's choice in the early 1980s, but a 1986 student vote picked the slug, and the chancellor gave way once athletes agreed.
Q 03What does a banana slug's slime do to the tongue of a predator that tries to take a bite?
Numbs it
The slime numbs it, working like an anaesthetic on a moist surface, and its stickiness makes the slug harder to grip and swallow.
Q 04Where on a banana slug's body would you find the two eyespots it uses to sense movement?
On its upper tentacles
On its upper tentacles, right at the tips, sit the eyespots, while the shorter lower pair handles smell.
Q 05Which California governor signed the bill that made the banana slug the official state slug?
Gavin Newsom
Gavin Newsom signed it on September 27, 2024, the same date Santa Cruz's city council had named a day for the university's slug in 2011.
Q 06Banana slugs are not fussy eaters, but which forest food do they seek out in preference to others?
Mushrooms
Mushrooms are the favourite, though a banana slug will also eat leaves, moss and animal droppings as it cleans up the forest floor.
Q 07Banana slugs belong to the molluscs, which makes them distant relatives of which of these sea animals?
Octopuses
Octopuses, squid and cuttlefish are molluscs too, and rank among the most neurologically advanced of all invertebrates.
Q 08After mating, some banana slugs have been seen doing what to their partner?
Chewing off its penis
Chewing off its penis, called apophallation, may free a pair whose organs have become trapped, and the slug that loses the organ can still mate as a female.
Q 09Sprinkling salt on a banana slug kills it by drawing water out of its body through which process?
Osmosis
Osmosis pulls water out through the skin toward the salt, and a slug's body is mostly water with no shell to hold it in.
Q 10The Pacific banana slug's coastal range stretches from California as far north as which US state?
Alaska
Alaska's southeastern panhandle is the northern limit, and the Pacific banana slug is the only one of its genus found outside California.
Q 11The Pacific banana slug is the world's second-largest land slug; the largest lives on which continent?
Europe
Europe is home to Limax cinereoniger, a woodland slug that can reach 30 centimetres, beating the banana slug's best of about 25.
Q 12What first name does UC Santa Cruz give its banana slug mascot, who features on the athletics logo?
Sammy
Sammy the Slug stayed on the athletics logo when it was redrawn in 2020 with a sleeker, simpler look.
Q 13A banana slug scrapes up its food with which ribbon of microscopic teeth, an organ shared with snails?
Radula
Radula is the name for this toothed ribbon, which works like a rasp to grind food into pieces small enough to swallow.
Q 21A banana slug's tentacles are muscular hydrostats, the same boneless design as which part of an elephant?
Its trunk
Its trunk bends and stretches with muscle alone and no skeleton, which is also how a slug's tentacles extend and pull back in.
Q 22What colour are most banana slugs when they hatch, before they grow into their famous yellow?
Pale white
Pale white hatchlings emerge a month or two after the eggs are laid and take on the adult colour only as they grow.
Q 23Mating California banana slugs bite and twist together into a shape likened to which symbol?
Yin and yang
Yin and yang is the comparison, since the two slugs curl around each other so that both can act as male and female at the same time.
Q 14What happens after a banana slug loses one of its four retractable tentacles?
It grows a new one
It grows a new one, and a banana slug can also pull its tentacles fully back into its body to keep them out of harm's way.
Q 15Because every banana slug has both male and female organs, what can a lone slug do without a mate?
Fertilize its own eggs
A lone banana slug can fertilize its own eggs, though most still find a partner and swap sperm, which keeps their offspring varied.
Q 16Banana slugs live in the foggy forests of which California tree, the tallest species on Earth?
Coast redwood
Coast redwood groves stay damp under regular summer fog, ideal for a slug that dries out easily and shelters by day under logs.
Q 17Coastal populations of which reptile specialise in eating slugs, banana slugs among them?
Garter snake
Garter snake populations on the coast feed mainly on slugs, while the same species living inland eats a far more varied diet.
Q 18Banana slug slime is neither solid nor fluid but which state of matter, also used in flat screens?
Liquid crystal
Liquid crystal fits the slime because its molecules flow yet hold an ordered pattern, and the same slime works as both a lubricant and a glue.
Q 19In hot, dry spells a banana slug wraps itself in mucus, soil and leaves and enters which dormant state?
Aestivation
Aestivation is the dry-season counterpart of a winter sleep, and the slug stays inactive until the forest floor turns moist again.
Q 20Banana slugs are gastropods, a group whose name joins the Greek words for which two body parts?
Stomach and foot
Stomach and foot is the literal meaning, because a gastropod's muscular sole sits directly beneath its guts.
Q 24What do banana slugs add to their slime trails so that potential mates can track them down?
Pheromones
Pheromones in the trail advertise a slug that is ready to mate, and a courting pair may circle, lunge and nip before pairing up.
Q 25Banana slug droppings act as forest fertiliser because they are rich in which plant nutrient?
Nitrogen
Nitrogen returns to the soil in the droppings, which is one reason these slugs are counted among the forest's key decomposers.
Q 26Which favour do banana slugs do for forest plants simply by eating, crawling off and leaving droppings?
Spreading their seeds
Spreading their seeds is the unplanned service: banana slugs carry seeds and fungal spores to new ground as they feed and move on.
Q 27What is the name of the single breathing hole that opens on the right side of a banana slug's body?
Pneumostome
Pneumostome is the term, and the hole opens and closes in a slow cycle that speeds up as the slug loses water.
Q 28The southernmost banana slugs live on which San Diego County peak, home to a famous observatory?
Palomar Mountain
Palomar Mountain's cool, wet forest is an island amid dry country, and its Hale Telescope was the world's largest for more than 25 years.
Q 29Which Native people of California's far north coast traditionally used banana slugs as food?
Yurok
Yurok people, whose homeland follows the Klamath River, ate banana slugs long before the animal became a college mascot.
Q 30Banana slugs recycle dead leaves, moss and animal droppings into which organic part of forest soil?
Humus
Humus is the stable, dark organic matter left when plant and animal remains break down, and it helps topsoil hold on to moisture.