While looking in the small pools in the parking lot for frog eggs, I found a caddis fly larva. It was waddling around the pool searching for algae and other organic debris to eat. It makes the most beautiful, mobile home in the larval stage.
Depending on the environment, the larva gathers plant material, leaves, twigs, sand, small rock fragments, or other detritus, to build its temporary home. It cements it together with salivary silk forming a cylindrical tube. It lives inside this camouflaged, protective casing as it develops. When it is fully grown, it closes the tube ends and pupates inside. After this stage, it will cut open the case, rise to the surface of the water, undergo a final molt, and begin flying. As an adult, it usually only lives for a few weeks. During this time it focuses on reproduction. Most species do not eat as an adult, but a few species will visit flowers for nectar.
I have a photo of the adult somewhere in my album. When I find it, I will post it.