banana slugs use four tentacles to sense their environment. A pair of upper tentacles, protruding from the top of their heads, are optical. Tiny black dots, or “eyes,” at the ends of the ...

A hermaphrodite, slugs are both male and female at the same time. Slugs have four tentacles: two eyes and two antennae. The slimy mucus slugs secrete aids them in locomotion. Because they’re ...