Limnogromia spec.

This tubular species was discovered in the sediment of Oosterplas, a freshwater lake in the dunes near the village of Bloemendaal in the Netherlands. Oosterplas is an artificial lake, excavated in the 1950s. The sand that was removed during its creation was used to raise the ground level of a new residential area in Haarlem. At its deepest point, the lake is between 2.5 and 3 meters deep. The lake serves as a recreational area where visitors can swim and picnic. It is situated approximately 3 km from the North Sea coastline. Red water lilies are also present in the lake.

July 2025, I found eleven specimens of an unknown Limnogromia species. They were multinucleated, with each nucleus measuring about 5 µm in diameter. There were hundreds of nuclei present in one cell.