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Jonathan Cohen

Assistant Professor

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  • B.S., magna cum laude, Biology & Environmental Science, Dickinson College, 1999
  • Ph.D., Biology, Duke University, 2004
  • Postdoctoral Fellow, Harbor Branch Oceanographic Institution, 2005-2006

Research Interests

Comparative physiology and behavior of marine animals; Neurobiology; Sensory systems; Vision; Zooplankton ecology; Deep-sea biology; Pelagic ecology; Polar biology

Current Projects

Current Lab Members

Corie Charpentier (PhD student), Adam Wickline (MS student), Laura Smith (MS student), Alex Wright (undergraduate), Jennifer Wright (undergraduate)




Recent Lab News

We have launched UnderTheScope -- an online resource to help educators use zooplankton in the K-12 classroom.  Check it out here: underthescope@udel.edu

Congratulations to Corie Charpentier and Alex Wright for each receiving a Grant-in-Aid of Research from Sigma Xi to support their research!

Jon is currently on Svalbard conducting research into light and vision in the polar night. Learn more at the UDaily series "A Tale of Two Poles" and in The News Journal.

Our DESG-funded zooscan project has been featured in UDaily, WDDE radio, The Coast Press, The News Journal (with graduate student Adam Wickline on the front page!), and WHYY First.

Jon participated in a symposium on Polar Night biology at the Arctic Change 2014 meeting in Canada.  More details on this and other presentations can be found on the Mare Incognitum website. 

Our DSG ZooScan project was featured in the Environmental Monitor.

EPSCOR Summer Scholar and UD senior Hayley DeMarchis won an EPSCOR science ethics essay contest.  Congratulations, Hayley!

Former UDRF REU student and UD Junior Alex Wright was selected as a NOAA Hollings Scholar for 2014-2016.  Congratulations, Alex!

See the blog from a research training cruise in June 2014 that traveled from Barbados to Bermuda.

Automated optical analysis of zooplankton

Using new technology to analyze and quantify zooplankton in the Delaware Bay

Sensory biology in the plankton

Adult mud crab with eggs ready to hatch

Pelagic ecology in the high Arctic winter

Graduate student Heather Cronin in Svalbard

Courses taught by Jon Cohen
Students with trawl

Students with tucker trawl cod end.

Journal of Experimental Biology

Pupils in the eyes of the estuarine squid Loliguncula brevis have a structure and function that facilitates vision in the water column

Journal of Experimental Marine Biology and Ecology

Larval behavior facilitates transport of invasive crab larvae.


Marine animals can see in dim light of high Arctic winter.


• Marine Ecology• Molecular Ecology• Ocean Observation• Physiological Ecology


CEOE School & Departments

School of Marine Science & Policy

Advancing the understanding, stewardship, and conservation of estuarine, coastal, and ocean environments.

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Department of Geological Sciences

Discovering how geological processes have operated over various time scales to create and influence the planet’s surface environments.

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Department of Geography

Investigating the interactions between people and the environment and the processes that explain the location of human and natural phenomena.

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College of Earth, Ocean, and Environment • 111 Robinson Hall • Newark, DE 19716 • USA
Phone: 302-831-2841 • E-mail: ceoe-info@udel.edu

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