Every year, Stromma together with Sportfiskarna, Stockholms stad, WWF, Skansen och Stockholms hamnar collects old Christmas trees and lower them in the waters in and around Stockholm. This creates new habitats for fish and fry since exploitation is threatening current habitats. The fir trees are bundled together, lowered in the water, and fish can play and reproduce among the trees at the bottom.
Habitats are vanishing in the Baltic Sea
The waters in Stockholm city and archipelago are today heavily affected by exploitation such as dredgings, boat traffic, quays and marinas. This affects reproduction of fry because former untouched habitat areas are slowly vanishing. If this continues in the same pace as today - in 50 years from now, all untouched areas can be gone.
About the Christmas tree project
Christmas trees are collected in January every year, they are bundled together and a heavy stone is attached. Then they are lowered in the water and new habitats can be formed at the bottom where fish can play and reproduce.
In spring 2018, divers went down with underwater cameras. They found a lot of fish roe among the fir trees, and there were also lots of fish swimming around.