⬅ #35 giant isopod #36 horseshoe crabNH-Icon-horseshoecrab.png #37 sea pineapple ➡

Horseshoe crab Gallery

"I got a horseshoe crab! I hope it's lucky!" —New Horizons

The horseshoe crab is a benthic, aquatic life form found at the bottom of the ocean in New Leaf and New Horizons. Diving is the only way of capturing it.

Donation to the museum

In New Leaf

In New Leaf, an information board in the aquarium will list information about this creature.

"Horseshoe crabs are called "living fossils," as they have not evolved since the age of the dinosaurs. Their backs are covered by a hard shell, forming a simple silhouette with their flat backs and long tails. Though referred to as crabs, they're actually more closely related to spiders and scorpions."

In New Horizons

Upon donation or selecting "Tell me more about this!", Blathers the curator will say:

"Some might say it's good luck to catch a horseshoe crab. But I am NOT among them, eh wot! Though called a "crab," this beast is an arthropod and thus more akin to spiders and scorpions! Its long tail resembles a scorpion stinger, in fact! Though it's quite harmless, they say. A "living fossil," the horseshoe crab has been around since before the dinosaurs. With that tank-like shell, I suppose it WOULD be the one to survive. But here's what truly rattles me to my beak... During breeding season, horseshoe crabs crawl up on the beach and make nests together in the hundreds. HUNDREDS OF HORSESHOE CRABS! And with that I can say no more."

Capture Quotes

"I caught a horseshoe crab! Its luck has run out!" —New Leaf
"I got a horseshoe crab! I hope it's lucky!" —New Horizons

Encyclopedia Information

New Leaf

Deep-Sea Creature
Encyclopedia Information
Horseshoe Crab.jpg
"I caught a horseshoe crab! Its luck has ran out!"
Size 16 inches
Time Night-Day
Season Summer

New Horizons

Deep-Sea Creature
Encyclopedia Information
Horseshoe Crab NH.png
"I got a horseshoe crab! I hope it's lucky!"
Current Active Hours 9pm–4am
Months active (north) Jul–Sep
Months active (south) Jan–Mar


  • In New Horizons, Blathers claims that horseshoe crabs aren't actually crabs, but arthropods. While his claim that horseshoe crabs aren't crabs is accurate (they're actually arachnids), the implication that crabs aren't arthropods is false, as crustaceans are a subphylum of arthropods.

Further information

Main article: Horseshoe crab on WikipediaHorseshoe crabs are considered to be living fossils. Horseshoe crabs resemble crustaceans, but belong to a separate subphylum, Chelicerata, and are closely related to arachnids (e.g., spiders and scorpions). They do not have hemoglobin in their blood; instead, they use hemocyanin to carry oxygen, and because of the copper present in hemocyanin, their blood is blue.

Deep-Sea Creatures
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