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    • Photo Gallery of Mollusks of Southern California >
      • Class: Polyplacophora
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    • Haliotis rufescens (The Red Abalone), California's State Mollusk
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  • HOME
  • ABOUT US
    • The Festivus
    • Meetings and Events
    • Membership and Dues
    • A Condensed History of the San Diego Shell Club
    • List of Presidents of the San Diego Shell Club
    • Historical Documents
    • Picture Gallery
    • Club Officers
    • Club Corporate Documents
    • Honorary & Charter Members
  • EVENTS
    • West Coast Shell Shows in Photos >
      • 2023 WCSS in Photos
      • 2024 WCSS in Photos
  • THE FESTIVUS
    • 2025
    • 2024
    • 2023
    • 2022
    • 2021
    • 2020
    • 2019
    • 2018
    • 2017
    • 2016
    • 2015
    • 2014
    • Festivus Past Issues (Online)
  • MEMBERSHIP
    • How to Become a Member
    • Electronic Membership Form
  • RESOURCES
    • Shell Club Presentations
    • Reference Resources
    • Sets of Data for Shells Offered at SDSC Auctions
    • Other Shell Clubs
    • Mollusk-related Web Site List
    • Library
  • STORE
  • CONTACT
    • Contact Form - Electronic
  • SHELLS!
    • Photo Gallery of Mollusks of Southern California >
      • Class: Polyplacophora
      • Class: Gastropoda
      • Class: Bivalvia
      • Class: Scaphopoda
    • Haliotis rufescens (The Red Abalone), California's State Mollusk
    • Information About Protected Areas and Regulations
Picture
Class: Bivalvia
A large group of mollusks, the bivalves possess two shells or "valves" hinged in such a way as to allow the soft parts of the animal to be protected when the valves close. There are many bivalves in our region, including offshore, along our beaches and rocky shore regions, and in the bays and estuaries.
Note: Click the images below to see larger versions of them!

Family: Limidae
Limaria hemphilli (Hertlein & A. M. Strong, 1946)
Picture
Live specimen. © P. Tuskes
Picture
Live specimen, Mission Bay, San Diego, California.
​© R. J. Waayers
Picture
Live specimen, in situ, Mission Bay, San Diego, California. © R. J. Waayers

Family: Solenidae
Solen rosaceus Carpenter, 1864
Picture
Empty shells washed ashore on beach, Mission Bay, San Diego, California. © R. J. Waayers

Family: Cardiidae
Dallocardia quadragenaria (Conrad, 1837)
Picture
Live specimen, in situ, Mission Bay, San Diego, California. © R. J. Waayers

Family: Donacidae
Donax gouldii Dall, 1921
Picture
Empty valves, Coronado, California. © R. J. Waayers
Picture
Empty valves showing size and color variation.
​Coronado, California. © R. J. Waayers
Picture
Picture
Picture
Live specimens in situ in an "abundant" year. Coronado, California. © R. J. Waayers

Family: Veneridae
Tivela stultorum (Mawe, 1823)
Picture
Empty shells on beach, Coronado, California.
​© R. J. Waayers
Picture
Series of immature specimens, found empty and washed ashore on beach, Coronado, California. © R. J. Waayers
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  • HOME
  • ABOUT US
    • The Festivus
    • Meetings and Events
    • Membership and Dues
    • A Condensed History of the San Diego Shell Club
    • List of Presidents of the San Diego Shell Club
    • Historical Documents
    • Picture Gallery
    • Club Officers
    • Club Corporate Documents
    • Honorary & Charter Members
  • EVENTS
    • West Coast Shell Shows in Photos >
      • 2023 WCSS in Photos
      • 2024 WCSS in Photos
  • THE FESTIVUS
    • 2025
    • 2024
    • 2023
    • 2022
    • 2021
    • 2020
    • 2019
    • 2018
    • 2017
    • 2016
    • 2015
    • 2014
    • Festivus Past Issues (Online)
  • MEMBERSHIP
    • How to Become a Member
    • Electronic Membership Form
  • RESOURCES
    • Shell Club Presentations
    • Reference Resources
    • Sets of Data for Shells Offered at SDSC Auctions
    • Other Shell Clubs
    • Mollusk-related Web Site List
    • Library
  • STORE
  • CONTACT
    • Contact Form - Electronic
  • SHELLS!
    • Photo Gallery of Mollusks of Southern California >
      • Class: Polyplacophora
      • Class: Gastropoda
      • Class: Bivalvia
      • Class: Scaphopoda
    • Haliotis rufescens (The Red Abalone), California's State Mollusk
    • Information About Protected Areas and Regulations