Guardian Nature School Team Contact Blog Project Noah Facebook Project Noah Twitter

A global community of nature enthusiasts
photographing and learning about wildlife

Join Project Noah!
nature school apple icon

Project Noah Nature School visit nature school

Blue shield limpet

Lottia pelta


This was an interesting find - a colony of limpets with a blue shell. There are not any blue limpets that I could find on the internet. Fortunately in the second picture there is a limpet on the left side that revealed some of the story. It is a Shield limpet with faint ridges and revealing a blue color underneath the outer layer. I'm not sure what is causing the blue color.


Spotted on an exposed rock at low tide.

Species ID Suggestions

Sign in to suggest organism ID


Brian38 2 years ago

Thank you Sukanya and Mark. It was really interesting the blue limpets only existed on the one boulder. There was a fresh water stream flowing nearby as well.

Mark Ridgway
Mark Ridgway 2 years ago

That really is a nice blue whatever it is. Barnacle friends show no such color.

SukanyaDatta 2 years ago

Brian...that tidal pool of yours is a treasure trove.I am submerging under a tidal wave of pure envy..
Keep posting please.

Spotted by

Washington, USA

Spotted on May 19, 2019
Submitted on May 24, 2019

Noah Guardians
Noah Sponsors

Join the Project Noah Team Join Project Noah Team