Elkhorn Slough National Estuarine Research Reserve, Coastal research reserve in Monterey Bay, California.
Elkhorn Slough National Estuarine Research Reserve is a coastal wetland reserve on Monterey Bay in central California, made up of salt marshes, mudflats, and a network of tidal channels. A visitor center sits at the entrance, and a series of walking trails fans out from there through the different areas of the site.
The reserve was established in 1982 as part of a national program to protect and study estuarine systems along the US coasts. Over the following decades, it grew into a key site for research on tidal wetlands in the eastern Pacific.
The reserve is a place where school groups and curious visitors can watch wildlife up close, from sea otters floating in the channels to shorebirds feeding on the mudflats. This hands-on contact with a working wetland gives people a clear sense of how these systems function.
All trails start from the visitor center, so it makes sense to stop there first before heading out onto the paths. Early mornings tend to be the best time to spot wildlife, especially during the cooler months of the year.
Sea otters, which were once absent from this area, began returning to the slough's channels in recent decades and now use them as a regular feeding and resting area. Their presence has had a measurable effect on the health of the surrounding seagrass beds, which they help protect by controlling sea urchin populations.
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