2. Anatomy
• External skeleton
made of calcium
carbonate (Chitin)
• Jointed appendages
• Segmented body
that is plankton-
sized to a few
meters long
• Bilateral symmetry
3. Anatomy cont.
• Open circulatory
system – internal
organs bathed in
blood
• Nerve ganglia
• Compound eyes
• Rely on chemical and
mechanical sensors
(pheromones &
antennae)
10. b. Class Merostomata
Horseshoe Crabs are
True Blue Blooded
Creatures
We have ____________________ to make our blood
red
Many crustaceans have hemocyanin, making their
blood blue!
http://www.youtube.com/watch?v=e8KlAmtIu1E
18. The Smallest, Most Abundant
Crustacean in the World’s
Oceans:
The Little Copepod
??What’s the largest planktonic
Crustacean??
Are You “CooCoo” for Copepods?
19. What’s Going On Here????
http://www.youtube.com/watch?v=yMxY4c5SeIs
http://news.nationalgeographic.com/news/2006/09/060921-krill-video.html