> When the organ is full of these bacteria, the bacteria glow and therefore stop the shadow of the octopi. It seems weird because the animal itself would be a

> When the organ is full of these bacteria, the bacteria glow and therefore stop the shadow of the octopi. It seems weird because the animal itself would be a lot more visible. This wikipedia article [1] about firefly squid says that the animal uses it's ability to match the brightness and colour of its underside to the light coming from the surface, making it difficult for predators to detect it from below Is that it? [1] https://en.wikipedia.org/wiki/Firefly_squid https://en.wikipedia.org/wiki/Firefly_squid