1. Ecosystem (Rocky Shore)
pool

2. Rocky Shore habitat

3. Zonation

4. Upper Shore
Lichen
Snail
algae
Periwinkle

5. Middle Shore
Limpet
Barnacle
Gastropod
Stalked
barnacle
Chiton

6. Lower Shore
Sea urchin
sea cucumber
Goby fish
Sea Anemones
Brown Algae

7. Physical Factors
Tidal movement
Wave Action
Substrate

8. Formation of tide

9. Tidal movement Desiccation Difficulty in gas exchange (gill)
High temperature
Salinity fluctuation (river, rain, rock pool)
Illumination

10. Rock pool
Tide in
Tide
out
salinity
Temperature
Time

11. Wave Action Wind speed and direction
Slope of shore or whether sheltered
Effect
Buffeting action (tearing )
Washing away
Sprays water to upper tide

12. Soft substratum as muddy and sandy shore Hard surface for attaching
Substrate
Soft substratum as muddy and sandy shore
Hard surface for attaching
Crack for shelter

13. Against desiccation, wave and salinity
Adaptation
Against desiccation, wave and salinity
Retreat to sheltered areas
Protective cover
Internal gill
Strong adhesive power (byssus threads, muscular food)
Flattened body
Red pigment in algae for deep water illumination

14. Cone shaped limpets

15. Up shore
Green algae
Low shore
Brown algae

16. Shell, muscular food

18. Inter-relationship in organisms
Predation
Competition
Commensalism
Mutualism
Parasitism

19. Food Web
. 1 = Detritus, 2 = plankton, 3 = benthic algae, 4 = acorn barnacles, 5 = Mytilus edulis (mussels), 6 = Pollicieps, 7= chitons, 8 = limpets, 9 = Tegula, 10 = Littorina, 11 = Thais, 12 = Pisaster, 13 = Leptasterias. (Diagram from Begon, Harper et al 1990)

20. Other predator

21. Related web site
Rocky Shore — Plants and Animals  
Intertidal Habitat: Rocky Shores
Intertidal Organisms
Intertidal Zone: Rocky — California coast

22. Marine biologist