How Mussels Reproduce and Evolve

While walking down the beach in the more remote part of Santa Monica, I noticed my familiar rocks to sit on looked less familiar.  I knew something appeared to be growing on them and to my surprise I noticed Mussels! Garlic, please.   No that’s what I thought I just thought how fascinating it was to see the process of evolving.   So how exactly do they reproduce?

Mussels on rocks

Photo by Crystal A. Johnson – Wil Rogers State Park, CA

According to Wikipedia, Marine mussels reproduce by releasing their eggs and sperm into the water. The young then begin life as floating plankton for between one and six months before settling on the bottom as an adult. With freshwater mussels, the male releases sperm into the water which then enters the female via her incurrent siphon.

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