Did You Know?
Some crabs can live on land!
Crab Shell
The shell keeps crabs safe from harm.
Crab Food
Crabs eat plants and small fish.
What crab Does
Crabs can dig in the sand.
They use their claws to catch food.
Crabs can swim in the water.
They can change color to hide.
Some crabs make loud sounds.
Crabs can live in groups.
More About crab
Crabs have been around for a long time. They live in oceans and on land. There are many kinds of crabs. Some are big, and some are small.
We see crabs at the beach. They help keep the sand clean. People like to watch crabs move. Some people even catch crabs to eat.
Crabs can be very fast. They can run away from danger. Some crabs can even glow in the dark!
How Topics Connect
graph TD
A["Crabs"]
B["Decapod Crustaceans"]
C["Brachyura"]
D["Anomura"]
E["Heavily Armoured Shell"]
F["Run Sideways"]
G["Hiding in Rocky Crevices"]
H["Polyphyletic Evolution"]
A --> B
B --> C
B --> D
A --> E
A --> F
A --> G
A --> H
What Do These Words Mean?
decapod:a type of crustacean with ten limbs
crustaceans:a group of animals with hard shells, like crabs and lobsters
carcinisation:the process of evolving into a crab-like form
polyphyletic:having multiple different ancestors
Brachyura:a group of true crabs
