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intertidal zone

All the Things You Never Knew About Barnacles

Strong-shelled and firmly cemented in place, barnacles shrug off even the strongest waves at high tide. Sharp-edged and closely clustered, they are a reminder that the sea is rough and therefore tend to be avoided. Their ubiquity means they also tend to be ignored—except by naturalists.

The Secret Life of Periwinkles

Periwinkles are so common, it’s easy to dismiss them. But these little marine snails have an interesting story to tell.