Post on 16-Jan-2015
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Shore Crab
• A crab is an animal that has 10 legs, a hard shell body and walk side ways.
There are almost 5,000 different species of crabs. But only 4,500 of them are true crabs and the other 500 of them are Hermit crabs.
Did you know that Hermit crabs don’t have a very hard shell so they steal other
animals shells for protection.
Did you know that a barnacle can sometimes get in my shell and take
nourishment from my blood. This changes my hormones so the next
time I lose my shell I will be a female crab.
The biggest crab is the Japanese Spider crab which lives on the floor of the north Pacific Ocean; it has a 3.7 meter leg span.
The biggest land crab is the Coconut crab which lives on islands in the Pacific Ocean; it has a leg span up to 75 cm.
The kelp crab is brown on top and red on the bottom.
The rock crab is light purple and red.
The hermit crab is grey and green.
The lined shore crab is reddish and purple.
The purple shore crab is dark purple with light purple dots on its claws.
The lumpy crab is red and brown.
And lots lots and lots more
Crabs are found on different beaches around the world.
Crabs are invertebrates which are animals with out a back bone. Their shell is a exoskeleton which provides protection from predators and also support for their muscles.
Protectionsupport
Some crabs are scavengers and eat dead animals. Some eat plankton and some young crabs eat worms. Larger crabs eat shrimp and other shellfish.
I am a very
hungry crab
Ouch!
Abdomen belly or stomach
Anatomy different parts of the body
Exoskeleton outer shell
Hormones
fluid in blood to make organs work
Invertebrates animals without a back
bone
Nourishment food that gives you goodness
Predator something that hunts others
Scavenger animals that eat dead
animals
As you can see crabs are very interesting because they come in all shapes all colors and all sizes. They can protect themselves by hiding in their shell and they also clean up the oceans and rivers by scavenging.