Title: Tide Pool Tenants in bold; background drawing of life in tidepools.
Twice a day receding tides leave a host of marine organisms and plants exposed on the rocky
surface or submerged in pools of seawater. In these deceivingly bountiful and busy mini-worlds,
barnacles, mussels, and seaweeds cling to rocks and feast on microscopic plankton brought in with
each rising tide. Dog whelks bore holes into barnacles and mussels and emit an acid that dissolves
their protective shells. Sea urchins use their tiny teeth and periwinkles employ their sandpaperish
tongues to scrape cells of food from rockweeds, wracks, and other seaweeds.
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