Exposed rocky shorelines – a grayling favourite

During a couple of sunny days in spring we had the opportunity to go out and learn more about one of the most iconic fish species of the Bothnian Bay - the grayling - and it's favourite habitat on the exposed, rocky shores. Together with our fish expert collegues we searched for grayling eggs along … Continue reading Exposed rocky shorelines – a grayling favourite

Who lives at the bottom of the sea?

The deep sea floors are in constant darkness which means no plants can grow there. But that doesn't mean it's a place empty of life. During the autumn of 2018 SGU (the Geological Survey of Sweden) and partner in the SEAmBTOH project, conducted a survey cruise in the archipelago of Haparanda to map the depths … Continue reading Who lives at the bottom of the sea?

Unique habitats: Sandbanks

If you ever stand on a shallow sand deposit and try to determine, whether it’s a sandbank or not, you’re not the only one wondering about it. The EU habitats directive tells us that the Natura 2000 habitat 1110 sandbank is predominantly shallower than 20 m and is always covered by water, and it may … Continue reading Unique habitats: Sandbanks

Unique habitats: Artificial Reefs

An artificial reef by definition is a man-made underwater structure usually built for a purpose of promoting marine life. It is widely accepted in the scientific community that artificial reefs are very beneficial. They can increase local populations such as algal growth, coral reefs and fish. They also can prevent coastal erosion and force waves … Continue reading Unique habitats: Artificial Reefs