“Green, translucent substance found on the beach, looks like glass but has gel or jello like consistency.”
Answer: "It might be sodium polyacrylate. It’s the stuff commonly used nowadays in diapers to absorb moisture. It starts out more solid and turns into a jelly texture after being exposed to water."
I have one that has been in use for over 80 years, there is nothing missing on it.
Driveway marker