Sea smoke rises from Lake Superior in Duluth Thursday. Kom, a saltie that sails under the flag of Malta, can be seen partially hidden on the right.

A wall of sea smoke hovered over Lake Superior in Duluth, Minnesota on Sunday, creating a captivating sight. Temperatures at Duluth harbor hit 18 below zero on Sunday, according to the Duluth News ...

DULUTH — Subzero temperatures lately have produced ethereal "smoke" on Lake Superior. Also called "steam fog," sea smoke "forms when water evaporates from the warm water surface and immediately ...

The number of sea lampreys in Lake Superior is estimated to be around 200,000. All other Great Lakes have populations below 100,000.