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| Section |
Contents |
| Information about Crabs |
| Introduction |
Where crabs are found; crab record holders; what is a crab; introduction to crustaceans. |
| Crab parts |
Introduction to the anatomy of a crab. |
| Breathing |
Breathing underwater; Breathing out of water |
| Defence |
Adaptations - structural and behavioural used by crabs to protect themselves from predators. |
| Eating |
What crab larvae eat: what adult crabs eat; what eats crabs; |
Food chains
and webs |
Producers and consumers; role of the sun: food chains: food webs; filter feeders; scavengers and decomposers; marine food chains and webs. |
| Life cycle |
The 5 M's - meeting, moulting, mating, mothering and maturing. |
| Crab Music |
A song and story about blue crabs from the Chesapeake Bay region of the United States. |
| Glossary |
Definitions and pronunciation of the key terms used on the unit. |
| Spotlight on .... |
More information about the following crabs:
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| Activities about Crabs |
| What crab is that? |
A simple key to classify some common Victorian crabs. |
| Crab for a day |
Board game, for one or two players, exploring the events that may occur during a day for a typical crab. |
| Crab Gallery |
Larger versions of some of the best photographs on the unit. |
| Crab Match'em |
A concentration style game covering many key words related to crab anatomy. |
| Crab Story |
Read a legend from the Marshall Islands involving hermit crabs and a needlefish. |
| What's for dinner? |
A simple fun game that looks at some things which crabs eat and some animals that eat crabs. |
| Spelling game |
In this game, students try to recognise then spell the names of various crab parts. |
| A crab's world virtual tour |
This activity allows students to move a crab around a marine environment. They can find out some things crabs eat and what eats crabs. This activity is used as the introductory page for students using this unit. |
| Crab Jigsaw Puzzles |
Four jigsaw puzzles to choose from. |
| Crab Cartoons |
| Breathing |
Does a crab need something like a snorkel to breathe under water? |
| Defence |
There are 3 cartoons related to defence - Burrowing, Defence, Hiding |
| Eating |
The diet of a crab depends on its lifestyle. Many crabs are scavengers. |
| Life cycle |
Many types of male crabs have a courtship display to attract a mate. |
| Excretion |
The excretory systems of the crab have not been included in this material as so little information suitable for student use was available. We have included the cartoon for your interest and amusement. |
