Crustaceans

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Crustaceans

• (Lobsters,Crabs, and Shrimp)

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Just the Facts.

• Crustaceans belong to the Phylum Arthropoda
  (jointed feet).
• All Arthropods have jointed appendages.
• All Arthropods have an exoskeleton.

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The Exoskeleton

• Is made of a tough fibrous material called
  chitin.
• This gives the skeleton strength and flexibility.
• There are several pairs (5 or more) of jointed
  appendages (movable arms and legs).

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Molting

• Molting is when the exoskeleton is shed as the
  organism outgrows it.

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Other Characteristics

• Bilateral symmetry
• Two main body segments-
• Cephalothorax
• Abdomen
• They filter feed, scavenge, or are predatory
• Use appendages for food getting and movement
• Found throughout the oceans of the world
• Are an important food source for other marine
  organisms
• They reproduce sexually, fertilize externally
• Have gills to breathe

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The Mantis Shrimp
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Tough Guy!
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The Mantis Shrimp vs. The Blue Ringed Octopus
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Crustacean Wars