FOR AGES 3 YEARS TO 18 YEARS
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Are you interested in learning cool facts about a specific type of chiton? In this article, you will learn about the mysterious gumboot chiton.
The gumboot chiton (Cryptochiton stelleri) is a species of invertebrate living mainly in coastal regions. These marine creatures are found in Alaska, the Aleutian Islands, Japan, the Channel Islands, and southern California. They are the largest chiton in the world and can live up to 20-25 years. These nocturnal invertebrates have simple body parts and can survive on red algae and sometimes eat young kelp and green algae. They range up to 14 in (35.6 cm) and have a red or brownish leathery girdle that completely conceals the eight valves or plates on the underside of their body, which is orange or yellowish in color. The giant Pacific chiton is sensitive to sunlight and prefers to live on the underside of intertidal rocks or on rocks below the low-tide line. The species reproduce once a year, from March to early July. These species are not at risk of extinction but their grip is not as strong as other chitons, which makes it easy to pull them off. So, there is a risk of over-harvesting these animals.
Read on to learn more about these amazing chitons and if you like this article, then check out limpets and fire coral.
Cryptochiton stelleri is the longest of the chitons and is found in rocky intertidal and subtidal zones. They are a species of mollusks.
They belong to the class Polyplacophora of the Animalia kingdom.
They are mainly found in coastal areas, however, the exact number of them living on this planet cannot be ascertained.
Gumboot chitons are found in quite a few parts of the world. A few of them can be spotted in Alaska west and the Aleutian Islands. They range from Japan, Kurile Islands, Kamchatka, and the Channel Islands to southern California.
The natural habitat of these marine species is coastal areas, where they are spotted in large numbers. They are found in rocky intertidal and subtidal zones and also in areas where the wave shock is moderate to low. They are mostly found in Northern latitudes where the temperature is low.
The species are not known to live in groups. However, during spring, a large number of them emerge from deep waters. They gather on rocky beaches to give birth to young ones.
These chitons grow slowly and live for a long time. They can easily live up to 20-25 years.
Reproduction occurs in these chitons once a year. The females of the species release dark green eggs in gelatinous strings in the water. These eggs are broken apart owing to wave action. When the males see these eggs, they start releasing sperm which helps in the process of reproduction in these invertebrates. The larvae hatch after between two to five days and swim in water for nearly 20 hours. Then the larvae settle and start to metamorphose.
Their conservation status is Not Evaluated under the International Union for Conservation of Nature or IUCN Red List. However, these animals can live for long years and are not currently facing any risk to their population.
Found in many parts from western Alaska to southern California, the giant Pacific chiton is the largest chiton in the world and can easily grow up to 14 in (35.6 cm). The gumboot chiton shell looks like a reddish-brown leathery girdle and the lower side is orange or yellowish. It also has a broad foot. The marine animal is different from other chitons as the eight shell plates, which range from white to bluish in color, are completely concealed under the mantle. The chiton's teeth contain a lot of magnetites which help it to scrape algae off rocks.
These creatures are not known to be cute at all. The gumboot chiton's shell is reddish and its shape is like a leathery lump.
Not much research has been done on how gumboot chitons communicate. However, since they are mollusks, we can assume that they communicate the same way as most mollusks. Mollusks produce a sound to communicate with mates or other mollusks and even to keep the predators away. Their sensory cells on tentacles can detect vibration in sound waves.
The gumboot chiton can grow up to 14 in (35.6 cm). They are almost 10 times bigger than most chitons which are 0.8-1.6 in (2-4 cm).
The exact speed of these invertebrates is not known. However, they do not move a lot and the adults are known to move only about 65.6 ft (20 m) in over a year.
This species weighs around 17.6-28.2 oz (500-800 g).
The males and females of this species do not have distinct names.
A baby gumboot chiton does not have a distinct name.
The invertebrate uses its tongue-like radula to scrape red algae from rocks. However, they are also known to eat young kelp and green algae. Unlike other chitons, they do not eat brown or other ephemeral algae.
They are generally not eaten by humans. However, they were known to be harvested by some coastal Alaskan natives who used to eat these chitons. You have to take the flesh out of the shell to eat them.
These invertebrates are not known to be kept as pets by most people. They don't do well in captivity.
The 18th century naturalist, Georg Wilhelm Steller, was the first to describe the giant Pacific chiton.
If the shell plates get broken in any way, these animals are capable of repairing them.
The marine species are known to grip on surfaces or substrates. However, their grip is not too tight which can result in them getting easily washed away. Also, these creatures come out at night and spend the day in areas that receive little or no sunlight.
Most people would not think of eating these chitons. Some indigenous people in coastal Alaska harvested them for food. However, they are eaten by aquatic creatures including sea otters, sea stars, and small snails.
Here at Kidadl, we have carefully created lots of interesting family-friendly animal facts for everyone to discover! Learn more about some other arthropods including immortal jellyfish and the apple snail.
You can even occupy yourself at home by drawing one of our barnacle coloring pages.
https://www.alaskasealife.org/aslc_resident_species/40
https://www.centralcoastbiodiversity.org/giant-pacific-chiton-bull-cryptochiton-stelleri.html
https://sanctuarysimon.org/dbtools/species-database/id/33/cryptochiton/stelleri/gumboot-chiton
https://www.tidesandtrails.org/single-post/2016/09/12/gumboot-chiton
https://www.inaturalist.org/taxa/49053-Cryptochiton-stelleri
https://themarinedetective.com/2012/09/30/gumboot-chitons-spawning/amp/
Read The Disclaimer
At Kidadl we pride ourselves on offering families original ideas to make the most of time spent together at home or out and about, wherever you are in the world. We strive to recommend the very best things that are suggested by our community and are things we would do ourselves - our aim is to be the trusted friend to parents.
We try our very best, but cannot guarantee perfection. We will always aim to give you accurate information at the date of publication - however, information does change, so it’s important you do your own research, double-check and make the decision that is right for your family.
Kidadl provides inspiration to entertain and educate your children. We recognise that not all activities and ideas are appropriate and suitable for all children and families or in all circumstances. Our recommended activities are based on age but these are a guide. We recommend that these ideas are used as inspiration, that ideas are undertaken with appropriate adult supervision, and that each adult uses their own discretion and knowledge of their children to consider the safety and suitability.
Kidadl cannot accept liability for the execution of these ideas, and parental supervision is advised at all times, as safety is paramount. Anyone using the information provided by Kidadl does so at their own risk and we can not accept liability if things go wrong.
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