Swelinia

Swelinia () or Swelina is a brook in northern Poland, located mostly between the cities of Gdynia and Sopot. It terminates into the Baltic Sea.

The original Slavic name Swelinia occurred first time in documents from 13th century (Rivulum qui Swelina dicitur, "a creek known as Swelina"), but subsequently that name was not used in any official documents or maps until it was mentioned again in the Geographic Dictionary of Kingdom of Poland in 1888.