Gumboot Chiton

By Adam Kitzler and Niko Kruzel

Common Name:  Gumboot Chiton (and in more recent publications “the wandering meatloaf”)

Scientific Name: Cryptochiton stelleri

Size Range: Up to 13 inches (33cm) in length

Identifying features: Gumboot Chitons have an orange to yellow underside and their skin is normally dark. Unlike normal chitons the eight bony plates on its back are concealed. The Gumboot Chiton is the largest chiton in the world and has no eyes or tentacles; but sensory cells to help it navigate. It is very slow.

Habitat: Gumboot Chiton live on shallow rocks, where they can stick using there large foot so they don’t get swept off by the tide or large waves. They exist from the central coast of California up to Alaska, across the Aleutian Islands and down to southern Japan.

Food: Gumboot Chiton are herbivores and eat algae, sea lettuce and seaweed. They feed nocturnally with a radula.  The radula contains two rows of teeth that scrape the surface of rocks for algae, they resemble a sort of zipper.  The teeth of the radula are one of the hardest known materials produced by a living creature.

Predators: Various bird species such as gulls will feed on Gumboot Chiton and occasionally octopus,  Sea Otters and sea stars. The chiton can roll up into a ball to protect itself.

Life Cycle: Gumboot Chiton can live over 40 years and are dioecious (have male and female reproductive organs in different individuals). To reproduce the male gumboot chiton releases a cloud of sperm into the water.  The female releases a long strand of eggs that are then fertilized by the sperm. The fertilized egg will develop into a trochophore larva and then metamorphose into a young chiton.


Gumboot Chiton Cryptochiton stelleri, OceanLink. Retrieved from on June,5,2010

Kozloff,E(1993). Seashore life of the northern pacific coast. An illustrated guide Northern California, Oregon, Washington, and British Columbia. Seattle, Washington: University of Washington press.

Gumboot chiton, Kelp Forest, Invertebrates, Cryptochiton stelleri. Monterey Bay Aquarium, California. Retrieved June 7, 2010 from

Mason, S. (January 2002). Taxonomy: Gumboot Chiton. Race Rocks Ecological Reserve/ Marine Protected Area. Retrieved June 7, 2010 from

0 replies

Leave a Reply

Want to join the discussion?
Feel free to contribute!

Leave a Reply