Curated OER
Endangered Relationships
Students study the interrelationship between the horseshoe crab and red knot. In this ecology lesson, students explain why several species became extinct. They research about endangered species found in their region.
Curated OER
Build-A-Horseshoe Crab
Students discover many facts about horseshoe crabs. Students identify the main body parts of horseshoe crab. They explore the habits of the horseshoe crab and their importances to the ecosystem. Adaptations for younger students are...
PBS
Pbs Learning Media: Marathon Migrators
This video segment from NOVA: "The Mystery of Animal Pathfinders" explores how the migratory patterns of shorebirds have evolved to coincide with the spawning of horseshoe crabs. [6:00]
Other
Horshoe Crabs and Human Use
A well-written review of the link between Horseshoe Crabs and humans through history. Includes timelines of milestone events.
Other
Horseshoe Crabs and Connection to Shorebirds
A description of the link between the horseshoe crab life cycle and shorebird migrations. Worth checking out for information on both kinds of organism.
Other
Horseshoe Crab: History and Biology
Resource is filled with lots of information presented in an easy to follow format. Illustrations are excellent.
PBS
Pbs: Nature: Crash: A Tale of Two Species
A documentary film about the horseshoe crab and its importance to a tiny shorebird known as the red knot bird. Human threats to the crab will directly threaten both the crab and the little bird who depends on it. Links to related topics...
Smithsonian Institution
Smithsonian National Zoo: Zoogoer Magazine: Crabs in the Crossfire
This article addresses facts and information related to the Horseshoe Crab. In addition to general information, the article touches on conservation efforts and populations trends.
A-Z Animals
A Z Animals: Animal Facts: Horseshoe Crab (Limulidae)
This entry identifies the defining characteristics of the Limulidae, otherwise known as the horseshoe crab.
Encyclopedia of Life
Encyclopedia of Life: Horseshoe Crab
The Encyclopedia of Life presents this in-depth overview of Horseshoe Crabs (Limulus polyphemus), including their habitats, size, conservation status, and much more. Images of this species and maps of its global distribution can also be...
Other
Beachnet: Horseshoe Crabs, the Ancient Mariners
Interesting facts and figures about horseshoe crabs, including information about mating, reproduction, pictures, and a link to the University of Delaware's page on Horseshoe Crabs.