Squid are be used as a study subject to someday create implants that are more comfortable inside a patient's body. Their beak is hard on one end and soft as it nears the mouth where it attaches. It is composed of chitin with protein molecules linking across the structure. When exposed to light, it becomes more rigid. This information can be used to create implants like feeding tubes which can be soft where they attach and progressively more rigid on the other end. The material of the squid's beak is being studied, as that is where this material is found.
Squid ink is being studied for its properties which can prevent tumor cells from spreading or metastasizing in the body. Its ink can be used to make squid ink pasta which contains antioxidants which are beneficial to the health of people who consume it. It also is purported to have anticancer properties along with antibacterial properties, which are all beneficial to health. Squid ink was used in the past as ink to write with.
Squid is popular as a food choice--calamari is eaten all over the world and originated in the Mediterranean region. This is fried squid. However, entrees can include squid served as a cold fish salad, in soups, or any number of ways. It is a staple in many cultures.
Squid have been studied for their intricate behaviors, ability to learn, and their advanced brain structure. Usually, one thinks of an invertebrate as not exhibiting a great deal of intelligence. However, squid do have the ability to show learned behaviors. Also, their eyes are quite complex and fascinating to scientists as a research topic.
To conclude, squid can be used in medical research, for culinary purposes and for research regarding animal behaviors. These are very wonderful cephalopods that have unique adaptations to life in the open ocean as a predator.
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