Interviewing Sten Siikavuopio, a senior scientist at Nofima, about just about everything regarding the king crabs and the sea urchins invading the Norwegian coast.
About the king crabs
The king crabs were introduced to the
For a long time the catching of king crab was forbidden in the
Can you breed the king crabs?
Nofima has been doing research on that since 1994, and we have found that it is very difficult to do breeding of kin crab in a profitable manner. That is because it takes too long to go from the starting product to the sellable, profitable product. After the crabs have reached 700 – 800 grams, they only change their shells once a year and following, the growth isn’t very big. Most producers want the crabs to be about 6 kilos when they sell them, and that takes from 7 to 10 years when breeding from larvae. But in the latest years, an aquaculture based on catching has started growing, and this has proved to be very fruitful. They catch the wild crabs and then keep them in captivity and feed them for 2 – 6 months until they are fat enough to be sold.
Can you catch the king crabs all year round?
Yes, you can, but the season is primarily in the autumn from October to January, after the crabs have eaten well during the summer. The autumn is the season for the commercial fishery. The worst time is in February – March when it is changing its shell. The new big thing in king crab fishery is that you can now catch both male and female crabs. This means that we can sell king crab roe which is a very luxurious product similar to Russian caviar. If we get an export of this roe up and running, we will have a good potential of great profitability.
The sea urchins
Yes, the sea urchins have a very special history. Did you know that there are over 400 species of them in the world, and that we harvest only 10 of these species? The little green one, droebachiensis, is the most popular one. This is also the type of sea urchin that we have the most of on the Norwegian coast.
How is the market for sea urchin now?
The top was reached in 1995 when we had the all time largest catching statistics of 125 000 tons sold in the world. But after 1995 the stocks have been overpopulated and are decreasing and diminishing in size. Most of the sea urchins are caught from growing wild, and exported alive. Much of the sea urchins go to
So can
Yes, well we are in the both lucky an unfortunate position that our coast is over-populated of sea urchins. This is in fact an ecological disaster! A surface on the size of Senja,
How is the process of breeding sea urchins?
It is not very common to breed the urchins from larvae because it takes too long. The better way is to catch them from the wild and then breed them up to a suitable size – like with the king crabs. The sea urchins grow evidently smaller and have less roe in them when there are too many of them. The down side of producing sea urchins this way is that to catch them you have to dive down and pick them up. However, we are actually working on developing a miniature submarine to increase the efficiency of this catching process. In
How are they transported? Isn’t there a limit of only 3 days after packing?
No, that is completely nonsense! They can very well be eaten up to 10 days after packing. You know, this is animals without a heart and brain, they can manage perfectly fine over a longer period of time. But I think that in a long term perspective, all export of sea urchin from
Are you working on any new form for breeding at the moment?
Well, you know that the king crab and the sea urchin are the most luxurious products, but we are now working on a breeding installation in Kirkenes, where they will breed char. This is a type of fish that needs to be bred in a closed land based plant. It is actually getting half of its financing from the Russians who have great interest in the fishing industry. They are a country of much resource when it comes to lakes and fresh water, but not on sea water. They have a great potential in developing breeding installations for fresh fish over there. Pinro and Veniro, the biggest companies in the Russian science industry, are working on many subjects. In Linehammeri (a closed sub-marine base near the Norwegian border) they are doing breeding of Norwegian salmon. Unfortunately, the possibilities of sea farming on the coast of the
Any last words?
Yes, you should check out the fishing tourism that is up and coming. It is a million dollar industry in