Crabs are everywhere. On menus. On beaches. In children’s books. In your nightmares, if you’ve ever seen deep-sea footage at 2 a.m.
They’re ancient, stubborn, wildly diverse, and—somehow—both delicious and terrifying. Whether you love them with melted butter or fear them in total darkness, crabs deserve a proper introduction.
So here it is: the complete story of crabs—how many there are,
How Many Types of Crabs Are There?
Scientists currently recognize around 6,700 species of crabs worldwide—and counting.
That number shifts as:
- new species are discovered (especially in the deep sea),
- DNA research reshuffles crab family trees,
- and some animals once thought not to be crabs turn out to be… very crab.
True crabs vs. false crabs
- True crabs (about 4,500 species) have wide bodies and short, tucked tails—the classic crab shape.
- False crabs (about 2,200 species) evolved into crab-like forms independently. Think hermit crabs and porcelain crabs. Same vibe, different origin story.
Crabs live almost everywhere:
- saltwater oceans
- freshwater rivers
- tropical beaches
- forests
- even landlocked islands
If evolution had a favorite silhouette, it was sideways.
The Top 10 Edible Crabs on Earth
Not all crabs are meant for the table—but these ten absolutely understood the assignment.
1. King Crab
Gigantic legs, snow-white meat, rich and sweet. Expensive, indulgent, iconic.
2. Snow Crab
Mild, delicate, easy to crack. The people’s crab.
3. Dungeness Crab
Sweet, nutty, and deeply flavorful. A West Coast classic.
4. Blue Crab
Small but mighty. The soul of crab cakes and Chesapeake summers.
5. Stone Crab
Served cold, claw-only, with mustard sauce. Sweet, firm, and sustainably harvested.
6. Mud Crab
Massive claws, buttery meat. Famous in Asian and Indo-Pacific cuisine.
7. Soft-Shell Crab
Eaten whole when freshly molted. Crispy, tender, unforgettable.
8. Spider Crab
Looks terrifying. Tastes surprisingly sweet and flaky.
9. Jonah Crab
An underrated favorite. Similar to stone crab, more affordable.
10. Brown Crab
A European staple with bold flavor—sweet white meat and rich brown meat together.
If a crab is edible, rest assured: someone somewhere perfected it with butter.
Giant Crabs: When Crabs Go Big
Some crabs didn’t just survive—they scaled up.
Japanese Spider Crab
The largest crab by leg span, reaching up to 12 feet. Ancient-looking, slow-moving, and deeply unsettling.
Coconut Crab
The largest land-dwelling arthropod on Earth. Climbs trees, cracks coconuts, and occasionally steals shiny objects like a crustacean raccoon.
Tasmanian Giant Crab
A cold-water heavyweight weighing over 30 pounds, with claws that look medieval.
King Crab
Even more intimidating alive than on a plate. Long legs, powerful movement, undeniable presence.
Giant Mud Crab
Aggressive, muscular, and dominant in tropical waters. Not a crab to underestimate.
Deep-Sea Nightmare Crabs
Then there are the crabs that live where sunlight never reaches—and comfort goes to die.
Yeti Crab
Covered in hair-like bristles, this crab farms bacteria on its arms and lives near boiling hydrothermal vents. Fuzzy. Horrifying. Real.
Hydrothermal Vent Crabs
Pale, often blind, and thriving in toxic water hotter than anything should survive. Biology’s most aggressive flex.
Blind Deep-Sea Crabs
Eyes are optional in total darkness. These ghostly crabs navigate by vibration and instinct alone.
Giant Isopod
Not technically a crab—but close enough to haunt dreams. A massive deep-sea scavenger capable of surviving years without food.
Deep-Sea Decorator Crabs
Some crabs wear sponges, anemones, or living organisms as camouflage, turning themselves into moving ecosystems.
Why Crabs Are Like This
Crabs are masters of adaptation. In fact, evolution keeps reinventing crab-like forms so often that scientists coined a term for it: carcinization—the tendency for animals to eventually evolve into something crab-shaped.
Armor works. Claws work. Sideways works.
Whether tiny, tasty, enormous, or terrifying, crabs endure.
The Final Sideways Truth
Crabs are older than dinosaurs.
They outlived mass extinctions.
They conquered land, sea, and darkness.
Some feed us.
Some frighten us.
Some do both.
And somewhere, deep below the surface—or under a rock you didn’t think to check—a crab is doing just fine without your approval.
