Episode notes
The oyster has no brain and colorless blood, yet it filters huge volumes of seawater, shaped the history of dining, and may help protect coastal cities. This episode dives into the alien biology and surprising human story of this bone-like bivalve.
We cover decentralized ganglia, a three-chambered heart, filter feeding that can move about 50 gallons a day, pseudo-feces, tidal rhythms, and sex changes driven by energy reserves. Then we trace oysters from Roman aquaculture and New York's 19th-century street food boom to overharvesting, the R-month rule, depuration, and oyster-tecture projects like the Billion Oyster Project.
- How oysters coordinate their bodies without a central brain
- Why farmed triploid oysters are sterile and why that keeps them plump
- Why edible oysters almost never produce valuable pearls
- The Vibrio science behind the old rule of eating oysters only in months with an R
- How oyster reefs dissipate wave energy better than concrete seawalls