Document Type



Virginia Institute of Marine Science

Publication Date



VA Sea 2020 Lesson Plans


Grades: 9-12 Subjects: Biology | Environmental Science | Oceanography

In 2014, scientists found that the Atlantic marsh fiddler crab had extended its northern limit by ~90 miles to New Hampshire, which is in the Gulf of Maine. Range expanding species can alter salt marsh characteristics such as biodiversity and food webs. In this lesson, students will combine sea surface temperature data from a federal database and fiddler burrow densities from field photos to determine the relationship between ocean warming and range expansions.


doi: 10.25773/wmm0-dj72


Secondary Education, Lesson Plans, habitat ranges, fiddler crab

Creative Commons License

Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License
This work is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 4.0 International License.


The 2019/2020 VA SEA project was made possible through funding from the National Estuarine Research Reserve System Margaret Davidson Fellowship Program which supports graduate students in partnership with research reserves where fieldwork, research, and community engagement come together. VA SEA is currently supported by the Chesapeake Bay National Estuarine Research Reserve, Virginia Sea Grant, and the Virginia Institute of Marine Science Marine Advisory Program.

MartinezSoto-VASEA_WaveFeverFiddlerCrabs_LessonPPT.pptx (10201 kB)

MartinezSoto-VASEA_WaveFeverFiddlerCrabs_BurrowCount_AnswerKey.pptx (34387 kB)
Images Answer Key

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