Tides don't always flush water out to sea, study shows

By area, tidal flats make up more than 50 percent of Willapa Bay in southwest Washington state, making this more than 142-square-mile estuary an ideal location for oyster farming. On some parts of these flats, oysters grow ...

Oyster

The word oyster is used as a common name for a number of distinct groups of bivalve molluscs which live in marine or brackish habitats. The valves are highly calcified.

Some kinds of oyster are commonly consumed, cooked or raw, by humans. Other kinds, such as pearl oysters, are not. These are considered an aphrodisiac.

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