Parting of the tears, for the long river of memory to add a new spray; parting blessing, for once again together began a prelude.

别离的泪水，为记忆的长河增添新的浪花；别离的祝福，为再一次相聚拉开了序幕。

youdao

My next memory involves being at the bottom of a Costa Rican river wondering which direction was up and holding my breath while I waited for my life-preserver to sort things out which it did.

WSJ: Dilbert Creator Scott Adams's Year Without Fear

The memory helps the fish find its way back to the mouth of its home river, and from there it uses chemical cues to locate its birth stream.

BBC: Sockeye salmon 'sense magnetic field of home'