Tiny glowing squid revealed like a pearl in the deep sea

Euprymna berryi, a small but brilliant squid in the ocean darkness, fascinates biologists with its special luminescent mechanism.

Very small size. Adult blackberry squid are only a few centimeters long, smaller than an adult finger. Photo: Pinterest.

Luminescent bacteria. They live in symbiosis with luminescent bacteria in optical sacs on the body. Photo: Pinterest.

Their colors change constantly. Thanks to pigment cells, their bodies can change from transparent to brightly patterned. Photo: Pinterest.

During the day, they bury themselves in the sand. They bury their bodies in the fine sand, only revealing their round eyes to observe every movement. Photo: Pinterest.

The life cycle is very short. The berry squid usually lives only a few months, matures quickly and reproduces early. Photo: Pinterest.

Moving by water jet. Although small, they still have the ability to shoot strong water to escape quickly. Photo: Pinterest.

Important in biological research. They help scientists better understand the mechanism of symbiotic luminescence. Photo: Pinterest.

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