One of our favorite spots on Mount Desert Island is Wonderland, a short Acadia National Park trail that leads through woods to the open ocean. At low tide (especially an extra-low tide), the Wonderland intertidal zone reveals colors and tide-pool life that a visitor could explore for days...if the tide didn't come in and swallow everything up.
While looking for an unrelated photo this morning, I came upon these shots Pamelia took of a shell at Wonderland. It's just an ordinary shell, but it doesn't look ordinary, not in this setting.
The shell may be from a small sea snail called a rough periwinkle. Or is it a type of whelk? (I need to find a photo of the underside to know for sure.) We have loads of smooth periwinkles along our shore; not so many of these.
That's all for today. Something ordinary. One shell in a billion.