In Venice, fish gotta swim, man’s gotta dream, and an Oceanarium may one day rise

In late June, a man in love with the sea sent me a tale of discovery, and he delivered it with a tone of urgency.

“I hope that you are as excited as we are by our new find,” Tim Rudnick, a 75-year-old beach-loving Los Angeles original, said in an email.

He identified himself as director of the…