A water flea (Daphnia magna) undergoes molting. Like all crustaceans, this tiny creature must molt to grow.
A water flea, part of the order Cladocera, is a small crustacean only a few millimeters long.
Caenorhabditis elegans, a nematode worm and one of the most-studied organisms in the lab. C. elegans moves through four larval stages, molting after each one.
Like other lizards, the common wall lizard sheds its skin when it outgrows it.
As this panther chameleon grows, it will slough off its old skin to reveal new skin beneath.
Mexican Red-Kneed Tarantula
Tarantulas (and other spiders) must molt as they outgrow their exoskeletons. Freshly molted spiders are very soft and vulnerable until their new exoskeletons harden.
Mangrove Tree Crab
Crustaceans like this mangrove tree crab also molt to grow.
Common Garter Snake
It's no secret that snakes shed their skin. Here, a common garter snake mugs for the camera.
Another lizard molter, the Carolina Anole.
Amazon Milk Frogs
Amphibians, including these Amazon Milk Frogs, molt periodically. Many frog species eat the shed skin.
An agile frog perches on a leaf. Frogs can molt as often as every few days.
Stephanie Pappas, Live Science Contributor
Stephanie Pappas is a contributing writer for Live Science. She covers the world of human and animal behavior, as well as paleontology and other science topics. Stephanie has a Bachelor of Arts in psychology from the University of South Carolina and a graduate certificate in science communication from the University of California, Santa Cruz. She has ducked under a glacier in Switzerland and poked hot lava with a stick in Hawaii. Stephanie hails from East Tennessee, the global center for salamander diversity. Follow Stephanie on Google+.