[Scpg] SB Audubon Program, "Santa Barbara Tidepool Treasures", Wed. 12/7/05, 7:30 PM, SBMNH

[Wesley Roe and Marjorie Lakin Erickson]

Subject: SB Audubon Program, "Santa Barbara Tidepool Treasures", Wed. 
12/7/05, 7:30 PM, SBMNH

Santa Barbara Audubon Society's December program will be on Wednesday, 
December 7.   The program takes place at Farrand Hall, Santa Barbara Museum 
of Natural History.  Doors open at 7 PM, program begins at 7:30 
PM.  Program description:





Santa Barbara's Tidepool Treasures

Genevieve (Genny) Anderson

Biological Sciences Department, Santa Barbara City College

Wednesday, December 7


At low tide, Santa Barbara's rocky shorelines reveal wondrous creatures 
living in four distinct horizontal bands - often unnoticed by 
beachgoers.  Each band experiences a different amount of dryness with the 
daily tidal cycle and has its own predictable assortment of common marine 
animals.  Tiny and drab periwinkle snails, fingernail limpets and buckshot 
barnacles dominate the Splash Zone, above five feet.  From five feet down 
to two and a half feet above sea level, mussels crowd out other species 
except a few gooseneck and balanus barnacles in the area call the High Tide 
Zone.  The band from two and a half feet down to sea level, called the Mid 
Tide Zone, is covered, almost exclusively, by aggregating anemones.  The 
last intertidal band, called the Low Tide Zone is below sea level and 
exposed to the air only a few times per month at the 'minus' tides.  Sea 
stars hide here, often under the brilliant green surf grass.  You can count 
on each of these species to be easily found within its horizontal 
band.  The tales describing their adaptations to dryness, feeding and 
reproduction begin to explain the reason each species lives where it does 
and why.

Spectacular life forms lurk in the water right below the Low Tide 
Zone.  These 'treasures' are most easily seen at minus tides and include 
crabs, octopods, sea urchins, sea hares, and the vividly colored sea slugs 
called nudibranchs.
Genny, who has taught Marine Biology and Biological Oceanography classes at 
Santa Barbara City College for over 30 years, will illustrate her program 
with images of the Santa Barbara tidepools and the individual species that 
can be found there.  Even after 30 years, she still finds surprises with 
each tidepool excursion.  Please join us in this exciting and beautiful 
journey to the California tidepools.

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