Getting an overview of your topic is the first step in your research process. Encyclopedias and credible websites can give you some background information on your subject.
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Example notes from Wikipedia article (to be confirmed with trustworthy sources):
Possible Keywords: bobtail squid, Sepiola atlantica, cephalopoda, symbiotic, symbiosis, symbiont, camouflage, crypsis, bioluminiescence, light organ.