Crustaceans

Welcome to our wiki about Crustaceans
Crustacns are some of the most diverse bugs the animal kingdom.

WELCOME FRIENDS

You Are About To Learn About The Most Amazing Creatures.

You can thank us later(;

Our team consists of

Hal- the guy that likes to think he's the 'Leader' that talks alot.

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Sophie- the chick thats loud and highly annoying but shuts hal up when he talks to much.

Greta- the quiet one that thinks things over.

Myles- the one who always writes.

Syed- our inspiration for the name, and the funny one that looks like tamwar from eastenders

And together we make THE CRUSTACEANS.

Anatomy
All crustaceans have bilaterally symmetrical bodies covered with a chitinous exoskeleton, which may be thick and calcareous (as in the crayfish) or delicate and transparent (as in water fleas). Since it does not grow, the exoskeleton must be periodically molted when the animal undergoes metamorphosis (typically from free-swimming larva to adult) or simply outgrows its shell. The free-swimming larva characteristic of crustaceans, called a nauplius larva, has an unsegmented body, a median eye, and three pairs of appendages.

Like other arthropods, adult crustaceans have segmented bodies and jointed legs; the segments are usually grouped into a recognizable head, thorax, and abdomen. In the majority of larger crustaceans the head and thorax are fused into a cephalothorax, which is protected by a large shieldlike area of the exoskeleton called the carapace. The head bears two pairs of antennae, usually one median eye and two lateral eyes, and three pairs of biting mouthparts—the mandibles and the two pairs of maxillae. Crustacean appendages have undergone extensive adaptation for various tasks such as swimming, sensory reception, and walking. Many species have the first pair of thoracic appendages modified into claws and pincers. The gills are generally attached at the bases of the thoracic appendages, and the beating of the appendages creates a flow of water over the gills that facilitates respiration. Reproduction is sexual, and in most forms the sexes are separate. In many species the eggs are brooded beneath the abdominal segments of the female.

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