Horseshoe Crab

Horseshoe Crab

Anatomy of the Horseshoe Crab

Anatomy of the Horseshoe Crab

Living Fossil The earliest horseshoe crabs were found 450 million years ago as fossils in strata. Many think of them as crabs and crustaceans when in fact they are more related to spiders and scorpions. Under their enormous shell, their bodies also look more like those of spiders.

Living Fossil The earliest horseshoe crabs were found 450 million years ago as fossils in strata. Many think of them as crabs and crustaceans when in fact they are more related to spiders and scorpions. Under their enormous shell, their bodies also look more like those of spiders.

that comment is great!....on a side note, that is a horseshoe crab. Contrary to the name it is actually more closely related to spiders than actual crabs.

that comment is great!....on a side note, that is a horseshoe crab. Contrary to the name it is actually more closely related to spiders than actual crabs.

Despite their common name, horseshoe crabs are not really crabs (crustaceans).  Called “living fossils” because they predate the dinosaurs by more than 200 million years, Atlantic horseshoe crab numbers have been declining since at least the 1990s. Delaware has the largest population of horseshoe crabs in the world, and scientists from NOAA’s National Estuarine Research Reserves are studying the species there.

Despite their common name, horseshoe crabs are not really crabs (crustaceans). Called “living fossils” because they predate the dinosaurs by more than 200 million years, Atlantic horseshoe crab numbers have been declining since at least the 1990s. Delaware has the largest population of horseshoe crabs in the world, and scientists from NOAA’s National Estuarine Research Reserves are studying the species there.

Horseshoe Crab

Horseshoe Crab

Atlantic horseshoe crab (Limulus polyphemus), by Brandon Woo

Atlantic horseshoe crab (Limulus polyphemus), by Brandon Woo

Horseshoe Crab Art | Dirt Cheap Bikes

Horseshoe Crab Art | Dirt Cheap Bikes

"Cangrejo Cacerola" Horseshoe crabs eyes are used to help us to understand how our eyes work due to their simpler structure. By studying circadian clocks and photo receptors horseshoe crabs help us to learn why vision worsens with age.

"Cangrejo Cacerola" Horseshoe crabs eyes are used to help us to understand how our eyes work due to their simpler structure. By studying circadian clocks and photo receptors horseshoe crabs help us to learn why vision worsens with age.

Mesolimulus walchi ... This extinct horseshoe crab-like arthropod lived around 150 million years ago. Photo: Raimond Spekking

Mesolimulus walchi ... This extinct horseshoe crab-like arthropod lived around 150 million years ago. Photo: Raimond Spekking

Hey, I found this really awesome Etsy listing at https://www.etsy.com/listing/176640033/horseshoe-crab-print-from-original

Horseshoe Crab - Print from Original Watercolor Painting, "Horseshoe Crab", Beach Decor, Seashore, Crab

Hey, I found this really awesome Etsy listing at https://www.etsy.com/listing/176640033/horseshoe-crab-print-from-original

How to Preserve a Dead Horseshoe Crab | eHow

How to Preserve a Dead Horseshoe Crab

How to Preserve a Dead Horseshoe Crab | eHow

Process: How Horseshoe Crab Blood Helps Save Lives | Wired Magazine | Wired.com

Process: How Horseshoe Crab Blood Helps Save Lives | Wired Magazine | Wired.com

1852 Vintage french crustaceans engraving by zoetropeantiqueprint

1852 Vintage french crustaceans engraving, original old sea life plate print, antique marine animal illustration, horseshoe crab crayfish

1852 Vintage french crustaceans engraving by zoetropeantiqueprint

Gold Painted Horseshoe Crab for Christmas Holiday Craft or Holiday Decor Accessory. $8.00, via Etsy.

Gold Painted Horseshoe Crab for Christmas Holiday Craft or Holiday Decor Accessory. $8.00, via Etsy.

In Japan, the horseshoe crab (Kabutogani) has long been legendary. In ages past brave warriors who honorably sacrificed their lives in battle were said to be reborn as horseshoe crabs, their shells samurai helmets, eternally crossing the bottom of the sea.

In Japan, the horseshoe crab (Kabutogani) has long been legendary. In ages past brave warriors who honorably sacrificed their lives in battle were said to be reborn as horseshoe crabs, their shells samurai helmets, eternally crossing the bottom of the sea.

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