1. Salinity Critter cards On the back of each card, write what makes each critter significant to the study of SALINITY

2. Where do these organisms live on the Gradient of Salinity? TOTALLY FRESH BRACKISH OCEANIC SUPER SALINE

4. Elodea

5. Elodea is a freshwater flowering plant (not an algae) that typifies a botanical adaptation to an aquatic lifestyle. As a result, it is not tolerant to salt water. Useful for classroom lab demos: microscopy plasmolysis photosynthesis

7. Surf Grass (at low tide)

8. At hide tide

9. Surf grass is a flowering marine plant, and so is tolerant to salt water. It lives in the intertidal zone, down to 40 feet deep

10. You also have seen Salt Grass (on the Gradient of Salinity)

11. Seaweed

12. Three types

13. One of three divisions of multicellular algae: green brown red These are mostly marine, and are customarily called “seaweeds.” They can survive almost complete dehydration during low tides.

15. Dryin’ but not dyin’

16. Caspian Sea seal

17. By the way, just where is the Caspian Sea?

18. The largest land- locked sea, about one third as salty as the ocean

19. Brine shrimp

20. Little crustaceans that are tolerant of extreme salty environments, from 24‰ – 250‰ !!! (although the optimal, as you know by now, is 60‰ – 100‰ )

22. Mono Lake

23. San Francisco Bay

24. Fiddler crab

26. Crustacean that burrows in muddy ecosystems, like brackish water estuaries

27. Three-spine stickleback

28. Example of a euryhaline fish. Many species live in brackish water (like estuaries in Washington.)

30. Tidepool sculpin

32. A euryhaline intertidal fish. Can withstand the changes in salinity a tidepool experiences: Less salty due to rain water or more salty due to evaporation

33. Pup fish

34. Devil’s Hole

35. Variety (over 100 species) of rare inland fish that exist in extreme environments (over 100°F and twice as salty as the ocean)

36. Diatoms

37. Any of the thousands of species of unicellular plant-like protists

38. Yellowfin tuna

39. Stenohaline marine fish with a low tolerance for variation in salinity

40. Rainbow trout

41. Stenohaline freshwater fish with a low tolerance for any salt

42. Polychaete worm

43. Marine annelid (segmented worm) that demonstrates being an osmoconformer. Tide pool species can tolerate changes in salinity. Because of this, it is a euryhaline organism.

44. chiton

46. Mollusk that can adapt to tide pool conditions by surviving extreme dessication (75% of its water)

47. limpet

50. Another intertidal mollusk. Survives low tide by “clamming up.” Seals its shell against rock substrate

51. Coralline algae (encrusting)

53. Coralline algae (not a plant) is a red algae (but can be purple or pink.) completely marine (intertidal) and hard because of calcium in cell walls. Comes in two varieties: encrusting and articulated