1. ECHINODERMS

2. ECHINODERMS
Means spiny skin

3. ECHINODERMS Means spiny skin
include sea stars, sea cucumbers, sea urchins and sand dollars

4. SEA CUCUMBER

5. SAND DOLLAR

6. SEA URCHIN

7. SEA URCHIN

8. ECHINODERMS Means spiny skin
include sea stars, sea cucumbers, sea urchins and sand dollars
ENDOSKELETON-internal skeleton
made of spines

9. ECHINODERMS Means spiny skin
include sea stars, sea cucumbers, sea urchins and sand dollars
ENDOSKELETON-internal skeleton
made of spines
spines made of calcium carbonate

10. ECHINODERMS Means spiny skin
include sea stars, sea cucumbers, sea urchins and sand dollars
ENDOSKELETON-internal skeleton
made of spines
spines made of calcium carbonate
covered in thin layer of skin

11. ECHINODERMS Means spiny skin
include sea stars, sea cucumbers, sea urchins and sand dollars
ENDOSKELETON-internal skeleton
made of spines
spines made of calcium carbonate
covered in thin layer of skin

12. ECHINODERMS
Usually have 5 arms around a central disk

13. ECHINODERMS Usually have 5 arms around a central disk
RADIALLY symmetrical-radiate around a central point (like spokes of a tire)

14. ECHINODERMS Usually have 5 arms around a central disk
RADIALLY symmetrical-radiate around a central point (like spokes of a tire)
live only in the ocean

15. ECHINODERMS Usually have 5 arms around a central disk
RADIALLY symmetrical-radiate around a central point (like spokes of a tire)
live only in the ocean
no well defined head

16. ECHINODERMS Usually have 5 arms around a central disk
RADIALLY symmetrical-radiate around a central point (like spokes of a tire)
live only in the ocean
no well defined head
circulatory, respiratory and excretory systems missing

17. ECHINODERMS
Have a nervous system, but no brain

18. SEA STARS
Common name=star fish

19. SEA STARS
Common name=star fish
range from 1cm to 1 m in diameter

20. SEA STARS Common name=star fish range from 1cm to 1 m in diameter
made of central disk and 5 tapered RAYS (arms)

21. SEA STARS Common name=star fish range from 1cm to 1 m in diameter
made of central disk and 5 tapered RAYS (arms)
CENTRAL DISK-area of mouth and stomach

22. SEA STARS Common name=star fish range from 1cm to 1 m in diameter
made of central disk and 5 tapered RAYS (arms)
CENTRAL DISK-area of mouth and stomach
NERVE RING-surrounds mouth

23. SEA STARS
Nervous system=nerve ring and nerves radiating out from ring

24. SEA STARS Nervous system=nerve ring and nerves radiating out from ring
WATER VASCULAR SYSTEM-used for movement and getting food

25. SEA STARS Nervous system=nerve ring and nerves radiating out from ring
WATER VASCULAR SYSTEM-used for movement and getting food
SIEVE PLATE-water enters

26. SEA STARS Nervous system=nerve ring and nerves radiating out from ring
WATER VASCULAR SYSTEM-used for movement and getting food
SIEVE PLATE-water enters
STONE CANAL-tube leading from sieve plate

27. SEA STARS Nervous system=nerve ring and nerves radiating out from ring
WATER VASCULAR SYSTEM-used for movement and getting food
SIEVE PLATE-water enters
STONE CANAL-tube leading from sieve plate
Ring canal-surrounds central disk
RADIAL CANALS-extend down each ray from stone canal
AMPULLA-forms suction

28. SEA STAR
TUBE FEET-connected to radial canal

29. SEA STAR TUBE FEET-connected to radial canal
hollow cylinders that act as suction disks

30. SEA STAR TUBE FEET-connected to radial canal
hollow cylinders that act as suction disks
help in movement

31. SEA STAR TUBE FEET-connected to radial canal Sea stars eat mollusks
hollow cylinders that act as suction disks
help in movement
Sea stars eat mollusks

32. SEA STAR TUBE FEET-connected to radial canal Sea stars eat mollusks
hollow cylinders that act as suction disks
help in movement
Sea stars eat mollusks
pry open shells

33. SEA STAR TUBE FEET-connected to radial canal Sea stars eat mollusks
hollow cylinders that act as suction disks
help in movement
Sea stars eat mollusks
pry open shells
turns stomach inside out through its mouth

34. SEA STAR TUBE FEET-connected to radial canal Sea stars eat mollusks
hollow cylinders that act as suction disks
help in movement
Sea stars eat mollusks
pry open shells
turns stomach inside out through its mouth
inserts stomach into shell, starts digestion right away

35. SEA STARS
REGENERATION-ability to regrow lost parts (ex. Arms)-central disk has to remain
SKIN GILLS-gas exchange (in addition to tube feet)

36. SEA STAR FEEDING

37. SEA STAR CLEANING STOMACH

38. OTHER ECHINODERMS
SEA CUCUMBER-shaped like cucumber

39. OTHER ECHINODERMS SEA CUCUMBER-shaped like cucumber
mouth on one end, tentacles all around

40. OTHER ECHINODERMS SEA CUCUMBER-shaped like cucumber
mouth on one end, tentacles all around
anus on other end

41. OTHER ECHINODERMS SEA CUCUMBER-shaped like cucumber
mouth on one end, tentacles all around
anus on other end
ejects internal organs when attacked

42. OTHER ECHINODERMS SEA CUCUMBER-shaped like cucumber
mouth on one end, tentacles all around
anus on other end
ejects internal organs when attacked
regenerates lost parts

43. OTHER ECHINODERMS
SEA URCHINS-large spines, look like prickly burr

44. OTHER ECHINODERMS SEA URCHINS-large spines, look like prickly burr
use spines to move

45. OTHER ECHINODERMS SEA URCHINS-large spines, look like prickly burr
use spines to move
SAND DOLLARS-flat and smooth-small spines

46. IMPORTANCE OF MOLLUSKS/ECHINODERMS
Food

47. IMPORTANCE OF MOLLUSKS/ECHINODERMS
Food
used at one time as money (clams)

48. IMPORTANCE OF MOLLUSKS/ECHINODERMS
Food
used at one time as money (clams)
shells are sold

49. IMPORTANCE OF MOLLUSKS/ECHINODERMS
Food
used at one time as money (clams)
shells are sold
make jewelry etc.

50. IMPORTANCE OF MOLLUSKS/ECHINODERMS
Food
used at one time as money (clams)
shells are sold
make jewelry etc.
pearls

51. IMPORTANCE OF MOLLUSKS/ECHINODERMS
Food
used at one time as money (clams)
shells are sold
make jewelry etc.
pearls
farms

52. IMPORTANCE OF MOLLUSKS/ECHINODERMS
Food
used at one time as money (clams)
shells are sold
make jewelry etc.
pearls
farms
fertilizer