1. Mollusc Classes

2. Class Gastropoda Means “stomach foot”
Largest class- 80% of all molluscs
Sedentary because of their heavy shell
Examples: Snails, slugs, conchs, sea hares, sea butterflies, limpets, whelks and periwinkles
snails
cone snail
giant African snail

3. Snails

4. Snails

5. Limpets

6. Limpets

7. Slugs

8. Whelks

9. Whelks

10. Conchs

11. Conchs

12. Conchs

13. Periwinkles

14. Periwinkles

15. Sea slugs

16. Sea slugs

17. Sea hares

18. Sea hare

19. Sea butterfly

20. Nudibranchs

21. Nudibranchs

22. Class Bivalvia Means “two shelled” Have no head or radula
Shells are made of calcium carbonate
All live in water
Examples: mussels, clams, scallops, oysters

23. Clams

24. Mussels

25. Scallops

26. Scallops

27. Oysters

28. Oysters

29. Zebra mussels (Lake Mead)

32. Preventing Mussels in Idaho
zebra muscles in idaho

33. Class Cephalopoda Means “head-foot” Most complex class All are marine
All are predators
Foot has adapted tentacles
Release ink in defense of predators
Have color changing cells for camouflage
Examples: squid, octopus, nautilus, cuttlefish
Chromatophores: cells that help the organism change color rapidly

34. Giant Squid

35. Slash marks from Giant Squid

36. Octopuses

37. Octopuses

38. Octopuses

39. Blue Ringed Octopus The most venous octopus.
This small mollusc lives in warm, shallow reefs off the coast of Australia, new Guinea, Indonesia and the Philippines. 
It has a life span of about one and a half years.

40. Blue Ringed Octopus
It is said that the venom of this octopus could kill 26 adults in just a few minutes.
There is no antivenin for treatment.
Fortunately, these octopuses do not attack humans.
Injury typically occurs when a blue-ringed octopus is stepped on or picked up.

41. Nautiluses

42. Nautiluses

43. Nautiluses

44. Cuttlefishes

45. Cuttlefishes

46. Cuttlefishes

47. true facts about the octopus
Cephalopods
octopus hiding
Kings of Camo
Nautilus
Cuttlefish
deadly animals
true facts about the octopus

48. Review

49. Review

50. Review

51. Review

52. Review

53. Review