Five groups that classify all living things
A group of animals within the animal kingdom
A group of animals within a pylum
A group of animals within a class
A group of animals within an order
The name of the animal in science
The animal group that the species belongs to
What kind of foods the animal eats
How long (L) or tall (H) the animal is
|1cm - 400cm (0.4in - 157in)|
The measurement of how heavy the animal is
|100g - 2,000g (3.5oz - 704oz)|
The fastest recorded speed of the animal
How long the animal lives for
|1 - 100 years|
Whether the animal is solitary or sociable
The likelihood of the animal becoming extinct
The colour of the animal's coat or markings
|Red, Brown, Orange, Blue|
The protective layer of the animal
The preferred food of this animal
The specific area where the animal lives
|Coral reefs and coastline|
|Average Litter Size:|
The average number of babies born at once
The food that the animal gains energy from
|Shrimp, Fish, Mussels|
Other animals that hunt and eat the animal
|Birds, Otter, Octopus|
Characteristics unique to this animal
|Hard, armoured shell and eight legs|
The crab is a type of crustacean similar to prawns, shrimp and lobster. There are more than 6,700 known species of crab found in waters worldwide and these many crab species are split into around 93 different crab groups.
Most crab species are found in the shallower ocean waters where the crabs tend to inhabit rocky pools and coral reefs. There are however, a number of species of freshwater crab that inhabit the waters in rivers and lakes and some species of tropical crab have been known to spend a great deal of time on land.
Generally, crabs don't get bigger than 40 cm in size, with the exception of the Japanese spider crab that has been known to have a leg span of over 4 meters long! The smallest type crab is the pea crab with this tiny species of crab only growing to a few millimetres.
Crabs have a thick armoured shell which protects the crab from immediate danger. The crab also has two front armoured claws which the crab uses to catch its prey.
The crabs hunt by sitting in a dark hole and catching potential prey that swims past. This allows the crab to feed effectively as well as staying hidden from those that would want to eat the crab.
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First Published: 14th December 2008, Last Updated: 8th November 2019
1. David Burnie, Dorling Kindersley (2008) Illustrated Encyclopedia Of Animals [Accessed at: 14 Dec 2008]
2. David Burnie, Kingfisher (2011) The Kingfisher Animal Encyclopedia [Accessed at: 01 Jan 2011]
3. Dorling Kindersley (2006) Dorling Kindersley Encyclopedia Of Animals [Accessed at: 14 Dec 2008]
4. Richard Mackay, University of California Press (2009) The Atlas Of Endangered Species [Accessed at: 01 Jan 2009]
5. Tom Jackson, Lorenz Books (2007) The World Encyclopedia Of Animals [Accessed at: 14 Dec 2008]