BIOL 227 - Lecture 2
Waves & Tides
Wave Formation
Tidal Patterns
Causes of Tides
Types of Intertidal Communities
Sandy Beach Community
Organisms of the Sandy Beach
Rocky Seashore Zonation
Splash Zone
Rough Periwinkle - Littorina planaxis
High Intertidal Zone
Plate Limpet - Collisella pelta
Purple Shore Crab - Hemigrapsus nudus
Middle Intertidal Zone
Goose Barnacle - Pollicipes polymerus
Lower Intertidal Zone
Green Anemone - Anthopleura xanthogrammica
Purple or Ochre Sea Star - Pisaster ochraceus
Purple Urchin - Strongylocentrotus purpuratus
Subtidal Zone
Email: bness@puc.edu
Home Page: http://www.puc.edu/Faculty/Bryan_Ness