1. The Marine Biome Marine Invertebrates: Mollusca

2. Clams Mussels Snails Octopus Squid

3. Body Type Bilateral symmetry Soft bodied animals, most have a hard protective shell ▫ Some classified as bivalves Mantle covers the body ▫ Protective tissue

4. Body Type Most have eyes Octopi have well developed brains

5. Motion Snails and Bivalves have a muscular foot Octopi have one foot divided into tentacles

6. Food Snails are scavengers ▫ Scrape food off ground Bivalves are herbivores ▫ filter feeders Octopi and squid are carnivores ▫ shell fish and small fish

7. Food Octopi are eaten by sharks ▫ Can eject a dark ink which confuses a predator and allows the octopus to get away

8. Importance For the Biome: ▫ Some clean the ocean floor For Humans: ▫ Food ▫ Medicines ▫ Jewellery

9. Examples Giant Clam

10. Examples Flame Scallop

11. Examples Cone Snail

12. Examples Sea Slug

13. Examples Squid

14. Examples Blue Ringed Octopus

15. Examples Pacific Octopus

16. Videos Giant Pacific Octopus Mimic Octopus

17. Interesting Fact Cone shells are marine snails. They prey upon other marine organisms, immobilizing them with unique venoms. There have been 30 recorded cases of human envenomation by fish-eating cone shells, in some cases fatal. Upon investigation it was found that the toxins in cone shell venoms possess pharmacological qualities that make them valuable tools in medical research.