Kingdom: Animalia Phylum: Arthropoda Subphylum:Crustacea
Arthropods Phylum Arthropoda
Largest phylum of animals, 3 of 4 on Earth
Marine: barnacles, shrimp, lobster, and crabs
Segmented body and bilateral symmetry
Chitinous exoskeleton leads to molting
No Marine insects
Crustaceans (“insects of the sea”) shrimp, crab, and lobster
Copepods, krill (zooplankton)
Shrimp and lobsters are scavenger
Gills
2 pair of antennae and segmented body
Compound eye; 14,000 light sensitive units
Mostly separate sexes, females store sperm