Slugs Have Four Noses — How They Smell, See, and Sense the World

Added: 2026-05-22

[00:00:00]Most people think slugs are simple, but they actually have four noses.

[00:00:05]Two long upper tentacles act as eyes, sampling light and motion from [music] the world.

[00:00:10]The lower pair of tentacles serve as noses, sniffing and tasting food and danger with incredible sensitivity.

[00:00:18]Slugs can retract these tentacles quickly when threatened, protecting their precious sensors.

[00:00:23]Their sense of smell guides them to food, mates, and safe hiding spots at night.

[00:00:29]Next time you see a slug, remember it [music] is quietly sensing the world in four different directions.