Halimus

About

Halimus or Halimous was a deme of ancient Athens, said to have been so called from τὰ ἅλιμα, sea-weeds, was situated on the coast between Phalerum and Aexone, at the distance of 35 stadia from the city of Athens. It had temples of Demeter and Core, and of Heracles. Halimus was the deme of Thucydides the historian.

Summary from Wikipedia