Quiet Moments From the High Intertidal

Among invertebrate inhabitants of the high intertidal, activity, for some, grinds to a halt when things dry out. Clamped down against a vertical wall with shells for protection, waiting out low tide won’t challenge these limpets and barnacles. It doesn’t hurt that they’ve settled on the shady side. A periwinkle made it just so far…

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Sitting it Out

Settled on a vertical face in the highest intertidal, Lottia digitalis sits out low tide clamped down tight. With the surf pounding just below, there is silence in these shells. Note to arachnophiles: While preparing this post I noticed a red speck on the shell of the middle limpet. That’s a red spider mite (Neomolgus…

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Perched Atop Pollicipes, Lottia digitalis is a Work of Camouflage

In the image below, barnacles cloak a vertical wall rising above a sand filled tide pool. You’ll encounter scenes like this on exposed coastlines around the world, wherever there is a rocky intertidal. Here, the barnacles are goose barnacles, Pollicipes polymerus. Look for them where surf crashes against jutting rocks and headlands. Take a closer…

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