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>> Bean clams at Newport Beach [topic: previous/next]
PostPosted: Wed Jan 31, 2018 9:46 am
Ken Jones


Posts: 9584
Location: California

FOR IMMEDIATE RELEASE- January 29, 2018

California Outdoors Q&A: Clams Everywhere!

Bean clams on Newport Beach,
Jan. 14, 2018.


Question: What causes thousands and thousands of tiny clams to be left on shore at Newport Beach as far as the eye can see? This was Sunday, Jan. 14. Does this happen regularly, and if so, why? (E. Marcus)

Answer: Those appear to be bean clams (Donax gouldii). This is a Southern California clam species found on sandy shores from Point Conception to southern Baja. Bean clams are known for their large, observable population fluctuations. In fact, population surveys conducted by a researcher at Scripps Coastal Reserve from 1949 to 1952 showed densities peaking at 20,000 clams per square meter, while in years preceding and following this boon, densities fell below one clam per square meter. These population resurgences were found to occur every two to 14 years. Female bean clams reach sexual maturity after their first year and sometimes spawn more than once a year. They are broadcast spawners, producing up to 50,000 eggs each spawning event. They can reach a maximum length of one-and-a-half inches, and they can live up to three years.

Bean clams bury themselves in the sand, but when extreme low tide conditions combine with wind and swell, they can become exposed. The good news is that as long as the shells remain closed, they will likely survive and get pushed out to sea when the tide returns.

The time stamp on your photo shows that it was taken around 2 p.m. on Jan. 14. There was a minus tide at Newport Beach at that time, which would explain why so many were left exposed in the intertidal zone where they reside.

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PostPosted: Wed Jan 31, 2018 11:42 am
Ken Jones


Posts: 9584
Location: California

Bean clams = good bait for inshore species
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PostPosted: Mon Feb 05, 2018 5:03 pm
SCMcCarty


Posts: 1

Ken Jones wrote:
Bean clams = good bait for inshore species


It is not surprising that surf fish like bean clams: they are small, at times abundant, and many surf fish have pharyngeal teeth for crushing shells.

However they have hardly any flesh. How do you put them on a hook?

Steve
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PostPosted: Mon Feb 12, 2018 7:47 pm
snookie


Posts: 170

Years ago I scooped up a 5gallon bucket of the clams. I washed the sand off, covered them with water and cooked them for the juice. It made the best clam chowder base. Of course I had to strain them.

Snookie
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