Bacteria
SciShow Tangents
The Bioluminescence of the Ocean
In the ocean, bioluminescence is practically everywhere. Some animals can make their own light, but others use symbiosis to glow. One of the most well studied partnerships out there is between the bacterium vibrio fisciareye and the Hawaiian bobtail squid. A squid provides these bacteria with a home and nutrients to grow in its light organs while the bacteria help it camouflage at night through what's known as counter luminescence. These symbiotic bacteria affect the genetics of the squid and vice versa.
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