| Acmostomum dioicum Metschnikoff, 1865 | 1952 | | seaweed | |
| Monoophorum striatum (Graff, 1878) | Jun 15, 1952 | | | Split, abundant in the seaweed along the Kastelanski shore. |
| Monoophorum striatum (Graff, 1878) | Jun 18, 1952 | | | Split, abundant in the seaweed along the Kastelanski shore. |
| Allostoma pallidum f.pusillum Westblad, 1955 | Jun 13, 1952 | 8-12 m | | |
| Haploposthia viridis (An der Lan, 1936) | 1956 or earlier | 40 m | | |
| Mecynostomum agile Jensen, 1878 | 1956 or earlier | 40 m | | east. |
| Mecynostomum minimum (Westblad, 1946) | 1956 or earlier | up to 25 m | | |
| Mecynostomum tenuissimum (Westblad, 1946) | 1956 or earlier | 10-40 m | | |
| Childia crassum (Westblad, 1942) | 1956 or earlier | 30-40 m | mud (Schlammböden) | |
| Childia dubium (Westblad, 1942) | 1956 or earlier | 30-40 m | | |
| Childia submaculatum (Westblad, 1942) | 1956 or earlier | 6-50 m | | |
| Rogneda capulata Karling, 1953 | 1956 or earlier | 40 m | mud | |
| Rogneda westbladi Karling, 1953 | 1956 or earlier | 4-40 m | mud loam | |