Fig 7. Normalized visual pigment sensitivities for dichromat fish mahi mahi (A), Coryphaena hippurus (Munz and McFarland 1979), and tetrachromat bird wedge-tailed shearwater (B), Puffinus pacificus (Hart 2004).

C. hippurus is most sensitive to light in the blue and green wavelengths, while P. pacificus is also sensitive to red wavelengths. Sensitivity spectra (limited to 400–700 nm) are superimposed on sample R(λ) for crab and algae.