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An ==Key Stage 1=====Meaning===A [[crustacean]] is an [[animal]] like a [[crab]] or a [[lobster]]. ==Key Stage 2=====Meaning===A [[crustacean]] is an [[invertebrate]] [[animal]] with a muscular body, a hard exoskeleton and 8 jointed legs and a . ===About Crustaceans===: Crustaceans have hard shells called an [[shellexoskeleton]] made of .: Most [[Calcium Carbonatecrustacean]]s live in the sea, but not all.

{| styleclass="height:20px; width:200px; textwikitable"|-align|[[File:Crab.png|center;" |Flies 200px]]|[[insectFile:Lobster.png|center|200px]]s which are a type of '''invertebrate''' with 6 jointed legs.| style="height:20px; width:200px; text-align[[File:Woodlice.png|center;" |Spiders are [[arachnid200px]]s which are a type of '''invertebrate''' with 8 jointed legs.|-| style="height:20px; width:200px; text-align:center;" |Earthworms are [[worm]]s which are a type of '''invertebrate''' with a long tube like body and no legs.Text| style="height:20px; width:200px; text-align:center;" |Snails are [[mollusc]]s which are a type of '''invertebrate''' with a muscular body. They also sometimes have a shell.Text| style="height:20px; width:200px; text-align:center;" |Crabs are [[crustacean]]s which are a type of '''invertebrate''' with muscular bodies with an [[exoskeleton]] and 8 jointed legs.Text