A type of colour-shifting squid can be bought at fish markets in Vietnam, as seen in this unique video where spots of colour can be seen changing when their bodies are touched.

Video of the phenomenon, captured on January 19, in Phu Yen, shows a person removing a dead squid from a bag and lightly touching its body to trigger the colourful flashes.

This is a type of squid called "mực chớp" in Vietnamese and Bigfin Reef Squid in English . They are distributed mainly in coastal areas of Vietnam and prized as seafood in many cultures.

These squids are sold for between $15 to $20 USD per kilogram.

This is a type of ink called "mực chớp" in Vietnamese and "flashing Squid" in English. They are distributed mainly in coastal areas of Vietnam.
The characteristics of this squid when touching their body, the squid will blink and change color. These squids are used to prepare food and make many dishes.
These squids costs from 15 to 20 USD per kilogram.
Video captured on January 19, 2020, in Phu Yen, Viet Nam.