What Is a Group of Crabs Called?

Crabs, with their distinctive appearance and fascinating behaviors, have captured the curiosity of many. These crustaceans are known for their sideways scuttling and tough exoskeletons, but have you ever wondered what a collective gathering of crabs is called? In this article, we will explore the intriguing world of crabs and discover the term used to describe a group of these remarkable creatures. So, let’s dive in and unravel the mystery!

Crabs are fascinating marine creatures that belong to the crustacean family. Their distinct appearance features a hard exoskeleton, pincers, and a sideways walking style, so they have become popular subjects of interest for scientists and casual observers alike. While we commonly encounter individual crabs along shorelines and in tidal pools, their behavior and interaction in groups raise the question: What is a group of crabs called?

Crab Behavior and Characteristics

Before we delve into the collective noun for crabs, let’s take a moment to understand their behavior and characteristics. Crabs are predominantly aquatic animals found in various marine environments, ranging from oceans to estuaries and even freshwater habitats. They exhibit a wide array of sizes, colors, and shapes, but they are generally characterized by their hard exoskeletons, jointed limbs, and two pairs of antennae.

Crabs are known for their remarkable ability to scuttle sideways due to their specialized jointed legs. They use their pincers for many purposes, including capturing prey, defense, and communication. Some species of crabs are highly skilled at camouflage, blending seamlessly into their surroundings by adopting the colors and textures of their habitats. Others have evolved remarkable adaptations, such as the fiddler crab’s oversized claw, used to attract mates and establish dominance.

The Terminology of Collective Nouns

Collective nouns are specific terms used to describe a group of living beings or objects. They add richness and depth to the English language, offering a way to refer to a collection of individuals succinctly. Examples of collective nouns include “herd” for cattle, “flock” for birds, and “school” for fish. These terms enhance communication by conveying the idea of a group in a single word.

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The Collective Noun for Crabs

Now, let’s reveal the intriguing term for a group of crabs. A gathering of crabs is commonly referred to as a “cast.” Using “cast” to describe a group of crabs draws parallels to the theatrical world, where actors perform together in a play. As actors collaborate on stage, crabs often congregate in groups, creating a spectacle in their natural habitat. The term “cast” captures the essence of these crustaceans gathering together and adds a touch of poetic flair to our understanding of their behavior.

Other Interesting Facts About Crabs

  1. Crustacean Classification: Crabs belong to the crustacean class, including lobsters, shrimp, and crayfish. They are classified under the order Decapoda, meaning “ten-footed,” referring to their ten legs.
  2. Molting Process: Crabs undergo molting, where they shed their old exoskeletons to grow larger ones. During this vulnerable stage, they seek shelter to protect themselves until their new exoskeleton hardens.
  3. Social Interactions: While crabs are not considered highly social animals, some species, like the hermit crab, exhibit communal behaviors by sharing shells. This behavior allows them to protect their soft abdomens and adapt to changing environmental conditions.
  4. Crab Cuisine: Crabs are a popular culinary delicacy worldwide. From mouthwatering crab cakes to delectable crab legs, these marine creatures have found their way onto menus across various cultures.
  5. Ecological Importance: Crabs play a vital role in maintaining healthy marine ecosystems. They serve as both predators and scavengers, contributing to the balance of their habitats by controlling populations of other marine organisms and recycling organic matter.


Are all crabs social animals?

No, not all crabs are highly social. While some species exhibit communal behaviors, others are more solitary in nature.

Do crabs communicate with each other?

Crabs communicate through various means, including visual displays, tactile signals, and chemical cues. These communication methods help them establish dominance, find mates, and signal danger.


In conclusion, a group of crabs is called a “cast.” With their sideways scuttling and hard exoskeletons, these captivating crustaceans have a unique collective noun that adds an element of intrigue to their behavior. From their diverse characteristics to their essential ecological roles, crabs fascinate us with their fascinating adaptations. So, the next time you spot a gathering of crabs along the shoreline, remember that you’re witnessing a cast of these incredible creatures.

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