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Pecten along a duck's beak

Ventral view of an unidentified scorpion species where the pectines can easily be observed. Pectines – the sensitive organs – have the inverted V shape in the image.

A pecten (pl.: pectens or pectines^[1]^{[full citation needed]}) is a comb-like structure, widely found in the biological world. Although pectens in various animals look similar, they have a varied range of uses, from grooming and filtering to sensory adaptations.

^ Merriam-Webster, Merriam-Webster's Unabridged Dictionary, Merriam-Webster.