Is Horseshoe crab kosher?
No — Horseshoe crab is not kosher under Jewish dietary law.
Not kosher. Despite the "crab" name, horseshoe crabs are arachnid relatives — not true crustaceans, but still a shellfish-type creature without fins or scales. Eaten in parts of Southeast Asia.
Image: Photo by Hans Hillewaert · licensed CC BY-SA 4.0 · source
About Horseshoe crab
Ancient marine arthropods more closely related to spiders than to true crabs; largely unchanged for 450 million years.
Kosher ruling
Not kosher. Despite the "crab" name, horseshoe crabs are arachnid relatives — not true crustaceans, but still a shellfish-type creature without fins or scales. Eaten in parts of Southeast Asia.
Source: Orthodox Union
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