Circles in rings and rocks at the beach

1 min read 4 Comments

hand wearing black silver scallop circle thumb ring and holding grey rock filled with circle hole indents

On my recent hiking/camping trip to Shi Shi Beach, I was struck by these fascinating rocks (large and small) filled with perfectly formed circular holes. Most of the holes appeared about the size of a quarter to half dollar and were perfectly uniform.

Shi Shi beach on Olympic Peninsula in Washington. Low tide showing sea stacks and rocks filled with holes and circles

I found these rocks so curious, when we got home I called the Wilderness Center to pick the brain of a ranger. At first she thought I was talking about a worm - which would be terrifying! Once I made it clear the rocks and holes were large, they clarified this was the work of rock boring mollusks called Piddock clams.

hand wearing dark silver scallop circle ring next to grey rock filled with circles and holes

Much of this rock was only visible at low tide (and on the opposite end of the beach from where we were camping) so I didn’t get the chance to investigate as thoroughly as I would have liked. But some very worn smaller rocks had washed up higher near the river outlet.

Shi Shi Beach on Olympic Peninsula in Washington State. Low tide large grey rocks full of circle holes and sea stacks in the distance

Crazy fun fact - the clams that created these holes live up to 20 years and possibly even up to 50. They also trap themselves in the rock as they bore larger interior holes. I feel like that’s a metaphor for a life lesson somehow…

hand wearing black sterling silver scallop circle ring next to grey rock with circle holes. Blue, grey, and white speckled rocks. Shi Shi Beach Washington adventure

These rocks were just some of the interesting things I saw on this beautiful stretch of coastline. Here are my favorite sea stacks and a roundup of sea stars from the same area.

Oh, and if you’re interested in the fun scallop circle ring I’m wearing while admiring these rocks, you can get your very own in bright or darkened silver here.

Catherine Grisez


4 Responses

Signet Ring UK

March 07, 2021

Gorgeous! Love this rocks and silver ring.

Catherine Grisez

March 07, 2021

Thanks Wendy!

Wendy

March 07, 2021

Awesome! Love this!

Diana

March 07, 2021

It’s so pretty! Love this beautiful rocks and silver rings.

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