The Fishwives Trail.

[dream_weaver]

Brackish
1 :somewhat salty
brackish water

2 a :not appealing to the taste
brackish tea

b :repulsive
a brackish personality

An estuary is a water passage where the tide meets a river current; especially :an arm of the sea at the lower end of a river.
The waters in such an area are oft' described as brackish.

A firth is an estuary.

Moray: administrative area of northeastern Scotland bordering on the North Sea

The Moray Firth has a history associated with it. Around 8000 years ago, presumably deemed by those who deem such things, hunter-gatherers used temporary campsites on the coast to exploit the seasonal abundance of fish and shellfish.

Leaping ahead,

Herring and sprat migrate into the Moray Firth in the summer months. In the 17th century, men went out overnight in small open boats to harvest these 'silver darlings' when they came in close to shore. With the developments of drift nets and preservation in salt, the firth's herring fishing boomed. For every fishing boat the herring curers hired, they would take on two women to gut the fish and one to pack them in salt. These women worked so quickly that they could fill a barrel with 700 fish in ten minutes!

Ten minutes is 600 seconds. That is just over a fish per second. Or, if more precision is desired, that is 0.857142857142857142857142857142 . . . seconds per fish—do the math. (A repeating, rather than irrational decimal, also known as a repetend or reptend.

According to wikipedia, the Moray Firth fishing disaster of August 1848 was one of the worst fishing disasters in maritime history on the east coast of Scotland, and was caused by a severe storm that struck the Moray Firth. The event led to widespread improvements to harbours and significant changes to the design of fishing boats over the remainder of the 19th century.

Over 100 vessels were destroyed in that storm. Less than 100 women were widowed. More than 100 children were partially orphaned. If you want to play it by the numbers, be sure the numbers that you play it by are valid.

A geometric progression I'm not going to chase here is somewhat captured in this wikipedia entry of the Moray Firth.

The Moray Firth (/ˈmʌrifɜːrθ/; Scottish Gaelic: An Cuan Moireach, Linne Mhoireibh or Caolas Mhoireibh) is a roughly triangular inlet (or firth) of the North Sea, north and east of Inverness, which is in the Highland council area of north of Scotland.

As "(or firth)" is used here, it could easily be digressed with but it would not readily add to the story.

I'm going to leave this with an excerpt from a link to the Fishwives Route. If you follow the link, notice the emphasis on trade.

Distribution to the people in the immediate hinterland was done on foot by fishwives with wicker baskets on their backs, each carrying about 40lbs of fish. Their trade was mostly by barter, exchanging fish for farm produce. All along the coast scores of fishwives would follow individual routes and have their own customers.

If the trader principal is alive and well on the planet earth, let it be fruitful and multiply.