Microspectrophotometric evidence for cone monochromacy in sharks

@article{Hart2011MicrospectrophotometricEF,
  title={Microspectrophotometric evidence for cone monochromacy in sharks},
  author={Nathan S. Hart and Susan Theiss and Blake K. Harahush and Shaun P. Collin},
  journal={Naturwissenschaften},
  year={2011},
  volume={98},
  pages={193-201}
}
Sharks are apex predators, and their evolutionary success is in part due to an impressive array of sensory systems, including vision. The eyes of sharks are well developed and function over a wide range of light levels. However, whilst close relatives of the sharks—the rays and chimaeras—are known to have the potential for colour vision, an evolutionary trait thought to provide distinct survival advantages, evidence for colour vision in sharks remains equivocal. Using single-receptor… 

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