Teacher Toolbox

Feed the Toolbox!

The HSC Teacher Toolbox can only grow and become as useful as people like you make it. Click here to submit additional materials to the Toolbox.

Videos and Links

The educational resources offered here are the products and intellectual property of individuals or groups of people who created them and now generously offer them for free use by others. When you use these resources, please recognize and credit the author(s)/source, and if you adapt or modify the original materials, indicate so in what is reproduced and distributed for use.

If the changes you make to any materials are such that you think they could be beneficial for other educators’ use, please consider uploading the adapted/modified version of the materials back to the Toolbox for others to access. Please consider contributing these and any other HSC-ed products of your efforts by Feeding the Toolbox.

Crash: A Tale of Two Species: Blue Blood segment

PBS Video

Brief, but beautifully presented clip from PBS video focusing on the use and bleeding of horseshoe crabs to produce lysate for screening of human medicines.  (3:16)



Tags: ,
Horseshoe Crabs Mate in Annual Beach “Orgy”

National Geographic

Brief but compelling look at Delaware Bay horseshoe crab spawning, including outstanding hi-res footage of spawning behavior and bleeding for biomedical use. Includes insightful commentary by HSC experts Glenn Gauvry and Dr. Dick Weber.  (3:29)


Tags: ,
Horseshoe Crab Tagging

Delaware Riverkeeper

Delaware Riverkeeper produced video documenting the importance and process of the HSC tagging program on Delaware Bay, including information on how and where to report tagged crab resightings.  (3:42)


Horseshoe Crab Census: A Guide for Volunteers

The Nature Conservancy

Silent/captioned training video produced by the Nature Conservancy demonstrating key aspects of the process by which spawning horseshoe crabs are surveyed on Delaware Bay beaches.  (6:42)



Molting horseshoe crab (Limulus polyphemus)

short, silent, time-lapsed photographed piece showing the molting of a juvenile HSC in an aquarium  (1:36)