Resource use

neomar technology stands for careful use of natural resources.


The oceanloop is characterized by an efficient land use. For customers this means low land costs and allows production in well-developed and logistically favorable areas.


neomar is currently the only company worldwide, which offers the inland production of seafish without access to natural sea water. Therefore the fish is produced in artificial seawater. Thus, there is already an economic interest in reducing this matter of expense, as much as technologically possible.

The independence of coastal areas was the reason for a further development of recirculating aquaculture systems (RAS) to an almost completely closed water circulation. The water renewal rate in the oceanloop due to operational losses is below 1% of the system volume per day. It does not require any seawater for diluting or discharge waste from the system, as it is completely removed by the water treatment. Only water losses due to the solid separation process and discharge of sludge have to be balanced with artificial seawater. Water losses due to evaporation are balanced with freshwater.


Energy efficiency was a main objective of the oceanloop development, as it strongly influences the profitability of recirculating aquaculture systems.

The oceanloop works, in contrast to many other recirculating aquaculture systems, with almost the same water level and without piping in the components of primary water circulation. By this, pressure losses are minimized in such a way, that energy-efficient flow pumps can be used. Furthermore, a sophisticated component design leads to synergies between the different units of water treatment and improves the overall filter efficiency of the system.

In terms of climate management, forms and amount of energy used in the farm have to be optimized, concerning ecological and economical factors. This has to be done in close cooperation with the customer, because investment strategy, as well as site-related factors must be considered.  

In particular, the use of renewable energy (such as geothermal or solar heat) and/or waste heat are in the focus of development. Biogas plants, steelworks and landfills can be named as examples here. For the first time, the unique feature of farming seafish wherever you are, enables a successful implementation of these concepts also for marine aquaculture. 

Feeding stuff

In comparison to terrestrial animal husbandry, fish stands out for a very good feed conversion. This underlines the future potential and sustainability of aquaculture.

Furthermore, feed conversion in the oceanloop is as a rule better than in open aquaculture systems, as the environmental conditions can be well controlled.

Nevertheless, a huge part of nutrients is excreted in dissolved and particulate forms and the physiological limit of feed optimization seems to have been reached for many fish species. However, these nutrients can be reused by secondary organism, in so-called integrated aquaculture concepts. These ideas of nutrient recycling are in the focus of our research and development. 

Genetic resources

A crucial success factor for aquaculture is the possibility to reproduce the cultivated species artificially. The independence of wild stocks is not only indispensible for ecological reasons, but also means economic sustainability.

neomar technology enables the farming of disease-free parental fish stocks in bio-secure systems. Our know-how and our technology are applicable in the areas of artificial reproduction, egg breeding, larvae rearing and fry production.