Abdomens

Worker bees construct the comb using beeswax, a substance produced by four pairs of glands located on the underside of their abdomens.

Like many other spiders, tarantulas have silk-producing organs called spinnerets located on their abdomens. Rather than spinning webs, the giant land spiders use their silk to line or guard their underground burrows. They have also been known to build hammock-like structures for a cozy place to spend the day.

The male cicadas are making all the racket — a mating call produced by vibrating membranes in their abdomens.

The male cicadas are making all the racket—a mating call produced by vibrating membranes in their abdomens. Their collective symphony approaches a level of 100 decibels—as loud as a motorcycle.