1. (Lobsters,Crabs, and Shrimp)
Crustaceans
(Lobsters,Crabs, and Shrimp)

2. Just the Facts….
Crustaceans belong to the Phylum Arthropoda (jointed feet).
All Arthropods have jointed appendages.
All Arthropods have an exoskeleton.

3. 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).

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

5. 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

6. The Mantis Shrimp

7. Tough Guy!

8. The Mantis Shrimp vs. The Blue Ringed Octopus

9. Crustacean Wars