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All resources tagged grades 7-12

Sewing a Horseshoe Crab

Sewing instruction and cutting pattern designed by Conservation Sew Mates:  www.facebook.com/CSVsewmates
www.csvsewmates.com.hk;  Collaborating with Conservation Sew Mates, OPCFHK organised workshops for the public and students to make their own horseshoe crab plush toys.

Partnering with NGOs, Conservation Sew Mates conduct livelihood projects in the form of workshops for the local community in areas where conservation awareness is being introduced and developed. This creative process, which covers pattern making, cutting, sewing, stuffing and then selling is our way of encouraging participants to work together in generating revenue through ecotourism.

Horseshoe Crab Papercraft

Anniqa Law, Juvenile Horseshoe Crab Rearing Programme,
Ocean Park Conservation Foundation, Hong Kong

A simple way to make a 3D horseshoe crab papercraft which you could write your messages on it!

Horseshoe Crab 3D Card

Anniqa Law, Juvenile Horseshoe Crab Rearing programme,
Ocean Park Conservation Foundation, Hong Kong

Make your card with a popup 3D horseshoe crab when you open it.  Send your greetings and share your love with your friends, families, as well as our nature!

Horseshoe Crab Documentary

Nick Bakers “Weird Creatures” Series

Comprehensive, compelling and creatively-conceived look at horseshoe crabs from Nick Baker “Weird Creatures” series.  Using the unifying theme of its long evolutionary history of survival, the film brings in various HSC experts, along with extensive footage of spawning on Delaware Bay to explore interesting aspects of HSC anatomy, life cycle, ecology and importance to man.  Includes a nice piece about halfway through on the biomedical use of HSC blood, and another segment further along featuring HSC vision expert Dr. Bob Barlow describing the eyes.  The final third of the video documents the use of HSCs for bait and the key linkage HSC eggs provide to hemispheric shorebird migration. In closing, a strong case of concern is made for potential threats to that survival posed by human activities today.  (47:07)

It’s not an Alien! Meet the Horseshoe Crab.

Epic Wildlife

Quick & simple introduction to the anatomy, life cycle, ecology & values of the HSC from Epic Wildlife TV series.  Point of interest:  The opening shots of the strange wildlife form from Russia (that was used to justify the HSC for inclusion in the piece) is actually not an HSC at all (appears to be a Triops crustacean)!  (2:33)

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)



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)


Exploring external anatomical features of the American Horseshoe Crab through observation of molt specimens
  1. Kreamer, Gary. Exploring external anatomical features of the American Horseshoe Crab through observation of molt specimens. Delaware Aquatic Resources Education Center, Smyrna, DE USA.  10 pp.

This activity utilizes molted (shed) exoskeletons of the American horseshoe crab, Limulus polyphemus, to engage students in identifying key structures in the external anatomy of the animal, and associating those structures with functions important to its way of life. An accompanying photo-rich molt observation study guide and student worksheet are provided to direct and capture student observations. Interpretive guidesheets on Limulus dorsal and ventral anatomical features are also provided in support of the lesson.  Instructions for preparation of specimens are also included.

Horseshoe Crab 101

2015. Kreamer, Gary. Delaware Division of Fish & Wildlife, Smyrna, DE, USA. 50 slides

This series of slides was developed to provide teachers and other educators with a tool for introducing their students to horseshoe crabs, including important and interesting things to know about the animals as well as some common misconceptions about them. An accompanying Horseshoe Crab 101 presenter notes piece and Horseshoe Crab 101 Dominoes assessment activity is also offered in support of the learning experience.  A pdf version of the slides is also available (should the size of the ppt version preclude download).

Horseshoe Crabs Around the World Web Research Activity

2012. Kreamer, Sharon W. The Tatnall School, Wilmington, DE, USA. 15 pp.

This activity involves students in internet-based research to become experts on one of the four species of horseshoe crabs (HSCs) found in the world. A series of focus questions and web links are provided to direct the students’ information search. Students are challenged to present their findings to the class in a choice of formats: mini-brochure, short PowerPoint presentation, or round-table discussion.