Brown Crab crab is the most common crab in Norway. It can be found on the northeastern Atlantic coasts and in the North Sea, all the way up to Finnmark. During winter, it often goes to deeper waters to avoid the cold surface. It thrives on hard bottoms, but the mature female moves into sandy bottom areas to spawn.
Crabs reach sexual maturity after about 7 years. In order to grow, they have to moult (shed their shell) repeatedly. Sexually mature crabs moult in the autumn and immediately after a female has moulted, mating takes place. Female crabs store the sperm for over a year and the eggs are then fertilized the following autumn. They keep the eggs under their "tail" for around 8 months before the eggs hatch. While the eggs develop they lie partly buried in the sand and to prepare themselves for this period, the females feed up on nutritious foods. Mature crabs moult every three or four years, however they can produce roe two or three times without moulting.
Crab larvae float freely in the water for about 2 months, moulting 7 times. When they settle, they are around 2.5 millimetres long. A year later they have changed shells several times and are 1.5 centimetres long.
Brown crab is caught in crab pots and nets, mainly in the autumn, when the quality is at its best. Crab is also caught as a bycatch.
Most types of benthos
Up to 20 years
Seafood contains almost all the nutrients the body needs. Brown crab is especially rich in:
- Protein that builds and maintains every cell in the body.
- Vitamin B12, which is important for the body in producing new cells, including red blood cells. Vitamin B12 can contribute help to prevent anaemia.
- Selenium, an important element in an enzyme that fights harmful chemical processes in the body. is an important contributory substance in an enzyme that fights harmful chemical processes in the body.
More nutritional data can be found at www.nifes.no/en/prosjekt/seafood-data