Assertion: electric eel's cell | /r/MadeOf | light-reflecting molecules
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Source sentences:
text: Using specialized cells containing pigments and light-reflecting molecules known as chromataphores, the Caribbean reef squid can change the color of their skin to convey a variety of messages: to court a potential mate, to warn others of a predator or a number of other messages—even conveying one message to a squid on their left side and a different one to a squid on their right.