NOAA
Noaa: Estuaries 101 Curriculum: Hooray for Horseshoe Crabs
Learn about the anatomy and ecological relationships of the horseshoe crab.
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.
Sheppard Software
Sheppard Software: Horseshoe Crabs
This site gives an in-depth description of a daddy long legs, including its behavior, appearance, reproduction, and classification. The site includes photos and illustrations and an interactive quiz to test your understanding.
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]
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