Sonke Johnsen

Professor of Biology

301 Bio Sci Bldg, Durham, NC 27708
Campus Box: 
Duke Box 90338, Durham, NC 27708-0338
(919) 660-7321


  • Ph.D., University of North Carolina at Chapel Hill 1996

  • B.A., Swarthmore College 1988

Bedore, CN, Kajiura, SM, and Johnsen, S. "Freezing behaviour facilitates bioelectric crypsis in cuttlefish faced with predation risk." Proceedings. Biological Sciences 282, no. 1820 (December 2015): 20151886-null. Full Text Open Access Copy

Gagnon, YL, Sutton, TT, and Johnsen, S. "Corrigendum to "Visual acuity in pelagic fishes and mollusks" [Vis. Res. 92 (2013) 1-9] doi:10.1016/j.visres.2013.08.007." Vision Research 115 (October 1, 2015): 155-156. Full Text

Baldwin Fergus, JL, Johnsen, S, and Osborn, KJ. "A unique apposition compound eye in the mesopelagic hyperiid amphipod Paraphronima gracilis." Current biology : CB 25, no. 4 (February 2015): 473-478. Full Text

Palmer, G, and Johnsen, S. "Downwelling spectral irradiance during evening twilight as a function of the lunar phase." Applied Optics 54, no. 4 (February 2015): B85-B92. Full Text

Baldwin Fergus, JL, Johnsen, S, and Osborn, KJ. "A unique apposition compound eye in the mesopelagic hyperiid amphipod paraphronima gracilis." Current Biology 25, no. 4 (January 1, 2015): 473-478. Full Text

Tedore, C, and Johnsen, S. "Visual mutual assessment of size in male Lyssomanes viridis jumping spider contests." Behavioral Ecology 26, no. 2 (January 1, 2015): 510-518. Full Text

Taniguchi, DAA, Gagnon, Y, Wheeler, BR, Johnsen, S, and Jaffe, JS. "Cuttlefish Sepia officinalis Preferentially Respond to Bottom Rather than Side Stimuli When Not Allowed Adjacent to Tank Walls." PloS one 10, no. 10 (January 2015): e0138690-. Full Text

Dougherty, LF, Johnsen, S, Caldwell, RL, and Marshall, NJ. "A dynamic broadband reflector built from microscopic silica spheres in the 'disco' clam Ctenoides ales." Journal of the Royal Society, Interface 11, no. 98 (September 2014): 20140407-null. Full Text

Muchhala, N, Johnsen, S, and Smith, SD. "Competition for hummingbird pollination shapes flower color variation in Andean solanaceae." Evolution; International Journal of Organic Evolution 68, no. 8 (August 2014): 2275-2286. Full Text


Mora, CV, Johnsen, S, and Lohmann, KJ. "Detection of polarized light by loggerhead sea turtles (Caretta caretta)." December 2005.

Tuthill, JC, and Johnsen, S. "Polarization vision in crayfish enhances motion detection." December 2005.

Johnsen, S, Kelber, A, Warrant, EJ, Sweeney, AM, Widder, EA, Lee, RL, and Hernandez-Andres, J. "The color of night: Twilight and nocturnal illumination and its effects on color perception." December 2005.

Blevins, EL, and Johnsen, S. "Spatial vision in the echinoid genus Echinometra." December 2004.

Sweeney, A, and Johnsen, S. "Evolution of complex optics in squid lenses." December 2004.

Costello, MJ, Gilliland, KP, Freel, CD, Fowler, WC, and Johnsen, S. "Mie light scattering analysis of human age-related nuclear cataracts." April 2004.

Sweeney, AM, and Johnsen, S. "Biological optical instruments in the deep sea." December 2003.