Summary:
- Bioluminescent bacteria are essential partners for the Hawaiian bobtail squid, a small marine creature. These bacteria live inside the squid's light-producing organ and help the squid glow in the dark, which camouflages it from predators.
- The bacteria and the squid have a symbiotic relationship, where both organisms benefit from the partnership. The bacteria get a safe place to live and nutrients from the squid, while the squid uses the bacteria's glow to hide from predators.
- Researchers have found that the squid's immune system plays a crucial role in maintaining this partnership, helping the bacteria thrive and preventing other microbes from taking over the squid's light-producing organ.