Key takeaways
- Tromso sits outside the regulated eastern quota area, where the crab is managed as an asset rather than a problem.
- Outside the quota area the policy is suppression: catching is open rather than rationed, but it is still regulated.
- The crab spread west along the coast over decades, so a Tromso fishery is a development of the last few years rather than a tradition.
- The pots are the same design set on the same seabed as the commercial gear, at a scale suited to one boatload.
An animal moving west
The red king crab belongs to the North Pacific, around Kamchatka and the Bering Sea. It reached the Barents Sea in the twentieth century through a Soviet programme to establish it as a food resource, took hold on the eastern side, and then began doing what a successful introduced species does, which is spread.
The direction of that spread is the whole story for Tromso. Arriving from the east, the crab colonised Finnmark first and the fishery grew up there. It has continued westward along the coast for decades since, and the fjords around Tromso are part of the ground it has taken more recently. That is why king crab fishing here is a young activity rather than an old one.
The line that divides the coast
Norway manages this animal in two completely different ways, and the boundary between them is the single most important fact about fishing it. In the east, around Kirkenes and the Varanger area, the crab is treated as a valuable resource: the fishery is limited by quota, allocated among boats and deliberately kept at a level that sustains it.
West of a defined line, the policy inverts entirely. There the crab is treated as an invasive species that Norway would rather not see advance further, and the objective is suppression rather than sustainable harvest. Tromso sits on the western side of that boundary, which means the rules governing the water outside the city are the opposite of the ones governing Kirkenes.
A crab pot coming up over the rail in the fjords outside Tromso
What free catch actually means
It is easy to read suppression as a free-for-all and that is not what it is. The catch is open rather than rationed, in the sense that it is not divided into quota shares the way the eastern fishery is, and the policy intent is to remove crab rather than to conserve stock. But it remains a regulated fishery with rules about who may fish commercially, what gear may be used and how it must be handled.
The practical effect for the boats working out of Tromso is that they are not competing for a share of a fixed number. What limits them is what they can find, catch and sell, in water where the animal is a comparative newcomer and the densities are nothing like those in the east.
Why an invasive animal is worth protecting elsewhere
This is the tension at the heart of the whole subject and it deserves stating rather than smoothing over. The red king crab is a large, long-lived predator introduced to a sea it did not evolve in, and it works its way across the seabed eating much of what it finds. Ecologically its arrival is not good news for what was living there first.
Economically it has become one of the most valuable things landed on this coast, in a region with few other industries. So Norway does both things at once: protects the fishery where it supports whole towns, and works to stop it spreading further west into places like the waters off Tromso. Whether the balance is right is a real question, and the people working these boats have opinions about it.
Pacific
The red king crab's home ocean. Everything about the Norwegian fishery follows from an animal arriving somewhere it did not evolve.
How a pot works on a fjord seabed
A pot is a simple thing and its logic only becomes obvious once explained. A frame with netting over it, baited, weighted, lowered to the bottom on a line with a marker float above it. The crab walks in for the bait and cannot readily find the way out again. Then it waits, and the pot is hauled after a soak of hours or days.
What makes this good gear rather than crude gear is selectivity. It catches what walks into it on the seabed, which is exactly where king crab lives, and everything comes up alive. Animals that should not be taken go back over the side in good condition, which is not true of every method of fishing.
The fjords as habitat
The water outside Tromso suits the animal well, which is why it has established here. The fjords are deep, cold, and sheltered from the open sea, with soft seabed in the basins where a crab can find the invertebrates and detritus it feeds on. Depth is not a problem for a species that lives comfortably far below the surface.
Sheltered water also makes the fishery workable in a way that open coast would not. Setting and hauling pots in an Arctic winter is difficult enough without an ocean swell, and the fjord system gives boats somewhere to work through months when the weather outside would stop them.
How the visitor trip relates to the real thing
Directly, and it is worth being clear about the differences as well as the similarities. The pots are the same design set on the same seabed for the same animal, and the people running the trip know the water because they work it. That is not a demonstration built for visitors.
What differs is scale and duration. A commercial boat works long days in weather a tour would not sail in, and lands a catch to sell. A four and a half hour cruise sets what a boatload of people will eat. The method is real; the scale is not. That is a more honest description than most visitor experiences can offer, and it is why the introduction on board is worth listening to.
