Horseshoe Crab (Limulus polyphemus) (juvenile)

Watercolor and colored pencil

Horseshoe crabs belong to the phylum Arthropoda, in the family Limulidae, and are actually more closely related to spiders than other marine invertebrates. They are one of the most primitive groups of animals, surviving relatively unchanged for hundreds of millions of years, and their natural history is one fascinating chapter in the story of evolution.

These ancient creatures possess ten eyes which are especially useful during the full moon when they move onto the beach, sometimes by the thousands, to mate. Their sensory perception is the focus of much current research, as are several unique physiological qualities which make them a valuable subject to biomedical science. Until the 1960s, they were gathered en masse and used as fertilizer. These and other pressures have been detrimental to horseshoe crab populations, but much focus has gone toward their conservation, due to their unique biology and place in the marine environment. For more about this species, visit MarineBio Conservation Society>>

Watch this fascinating Sci Shoot about Horseshoe crab biology presented by David Remsen, Director of the Marine Resources Center at the Marine Biological Laboratory, Woods Hole, MA

Original: Sold

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