1. Ecology of a Rocky Shore Community

2. Zones of Life along a Rocky Shore
Why are some animals and plants located in special zones and not all over?

3. Adaptations for life on a high energy rocky shoreline
High energy waves
Low tide exposure

4. Animals on a typical New England rocky shore

5. Asian Shore Crab
Periwinkle snails
Blue Mussels
Purple Sea Urchin
Rock Barnacles
Common Sea Star

6. Algae on a typical New England rocky shore
Fucus
Knotted Wrack
Ulva
Chondrus
Kelp

7. Adaptations to life on a rocky shore line Adapting to Wave Shock
Barnacles
Cements shell to rock
Snails
Use a suction cup like foot

8. Adaptations to Wave Shock
Sea Stars and Urchins
Tube feet with suction cup ends

9. Adaptations to Wave Shock
Blue Mussels
Byssel Threads ( strong cables)

10. Adaptations to Wave Shock
Crabs and Lobsters
Wedge into rock spaces
Hide under rocks

11. Adaptations to Wave Shock
Sea Weeds (macroalgae)
Hold fasts attach to rocks

12. Rocky shore animal feeding adaptations
Barnacles
Filter food with feathery legs (filter feeder)
Snails
Scrape food with a radula - tongue with teeth (grazers and carnivores)
Sea stars
Use tube feet and stomach

13. Reproduction adaptations

14. Barnacles are hermaphrodites
Each barnacle has both male and female reproductive organs
Marine snails mate and deposit egg cases
Sea stars and Urchins broad cast eggs and sperm into the water
Marine Arthropods like crabs and lobsters mate. Female attracts male using pheromones.
After the female molts and mates with the male, eggs will later be deposited on underside of her abdomen and carried until they hatch.

15. Lobster with eggs
Green crab with eggs