Sewage\sewer outflow\outfall\discharge pipes

Overview
It is a form of culvert, drain or sewer pipe that pours treated or untreated sewerage in to a major river or the sea, the latter being called 'marine outflow' and the prior being called 'drain outflow'.

Examples
Some could be found at (as of the late 2010s):
 * 1) Waterloo, Merseyside, UK.
 * 2) Portslade beach Brighton.
 * 3) Pattaya Beach, Thailand.

Also see

 * The 2018 Anglo-French Scallop Wars