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Spring’s Arrival Sparks the Beginning of Citizen Science Surveys!

by: Angela Trenkle (CIB Volunteer)

Each year in the Inland Bays watershed, as the snow melts and the temperatures begin to turn warm, CIB volunteers begin their preparations for two citizen science surveys!

Volunteers go to these sites and use 30-foot seine nets to collect organisms within the Bays…


The Center’s Inshore Fish Survey tracks changes in the fish community with data spanning back seven years. Taking place between April and October, fish are collected at 16 sites around the Bays and their tributaries. Volunteers use 30-foot seine nets to collect fish (and sometimes other organisms!), which are then counted, recorded, and put back into the water.

The surveys cover various habitats ranging from the sandy coast at Coastal Kayak to the muddy bottom of Sandy Beach. The Bays themselves contain over 100 species of fish, about 40 species of shellfish, and at least another 100 species of invertebrates! Some common species, such as the Mummichog and the Silverside Minnow, are spotted at almost every habitat site. Others, including the Cownose Ray and the Lined Seahorse, are only spotted occasionally.

With the fish seining surveys,

each day is like going on a treasure hunt

— you never know what you might find!

Horseshoe crab surveys
are more predictable in that the same species are being studied, but the survey is no less important! Because the horseshoe crab is an over-harvested species, used in the medical industry for their special blood. Population data from these surveys can be used to manage the species and to set harvest limits.

During this survey, volunteers visit six beaches around the Bays at the evening high tides, during the full and new moons of May and June. At each site, there are four counts taken: total crabs, total nesting females, total males, and total females.

Both the Inshore Fish Survey and the Horseshoe Crab Survey are important tools for understanding populations in the Inland Bays. They can help inform harvest limits and best management practices, and they help to teach the community about the different types of aquatic organisms within the watershed.  

RSVP to the Fish Survey Kick Off – March 26, 2018

RSVP to the Horseshoe Crab Survey Kick Off – April 5, 2018

About the Author



Originally from Ponce, Puerto Rico, Nivette completed her Bachelor's in Coastal Marine Biology at the University of Puerto Rico in Humacao. She then went on to complete her Masters of Science in Natural Resources through Delaware State University as part of the National Oceanic and Atmospheric Administration Living Marine Resources Cooperative Science Center in Dover, Delaware.

Before her work at the Center, she held a field technician position with Delaware Department of Natural Resources and Environmental Control and the Atlantic States Marine Fisheries Commission and worked as an independent consultant for the Caribbean Fishery Management Council.  Through these experiences, she interacted with numerous recreational and commercial anglers learning first-hand about fisheries and aquatic ecosystems. These interactions motivated her passion for science communications.

In her spare time, she can be found training Krav-Maga, helping organize events to promote outdoor recreation like Delaware’s Becoming an Outdoors Woman program, working to increase Diversity and Inclusion in the fisheries sciences with the Equal Opportunity Section of the American Fisheries Society, hiking Delaware’s trails or fishing Delaware’s waterways with friends and family.

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