Laguna Beach, Orange County, CA. 6/6/15. © Peter J. Bryant

Opalescent Sea Slug

Hermissenda opalescens

Nudibranchiata: Facelinidae

Occurs from Northern California to Punta Eugenia, Mexico

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Laguna Beach, Orange County, CA. 6/6/15. © Peter J. Bryant

Laguna Beach, Orange County, CA. 6/6/15. © Peter J. Bryant

Laguna Beach, Orange County, CA. 6/6/15. © Peter J. Bryant

Heart beating
. © Rex Barnard

Laguna Beach, Orange County, CA. 6/19/15. © Peter J. Bryant

Laguna Beach, Orange County, CA. 6/19/15. © Peter J. Bryant

Alamitos Bay, Long Beach, Orange County, CA. 8/30/2007. © Ángel A. Valdés.

Juvenile? Cabrillo Beach, Los Angeles County, CA. 5/27/2017. © Peter J. Bryant