| Haplogonaria simplex Dörjes, 1968 | Sep 1963 |  | coarse sandy beach bank |  | 
| Pseudaphanostoma syltensis (Dörjes, 1968) | Oct 1963 |  | coarse sandy beach bank |  | 
| Anaperus tvaerminnensis (Luther, 1912) | Oct  1962 |  | coarse sandy beach bank |  | 
| Atriofronta polyvacuola Dörjes, 1968 | Sep 1963 |  | coarse sandy beach bank | museum specimen number: SMF 3300-3306 | 
| Messoplana falcata (Ax, 1953) | 1969 |  | sand | sand flat, east bank  of the Litoral Station ( leg.  U. Ehlers.) | 
| Paromalostomum dubium (de Beauchamp, 1927) | Jul 1949 | sublittoral | fine sand |  | 
| Pratoplana galeata Ehlers, 1974 | Sep 1969 - Jan 1970 |  | sand | In the sand slope south of the port, 9-20 m above the NWL.  12 individuals. | 
| Haloplanella longatuba Ax & Heller, 1970 | Sep 1969 |  | sand | 2-20 m above the NWL in the sand slope.  7 individuals. | 
| Brinkmanniella macrostomoides Luther, 1948 | Sep 1969 |  | sand | Arenicola sand flat.  20 m above NWL.   Some individuals. | 
| Brinkmanniella macrostomoides Luther, 1948 | Jan 1970 |  | sand | Arenicola sand flat.  20 m above NWL.   Some individuals. | 
| Adenorhynchus balticus Meixner, 1938 | Sep 1969 |  | sand | middle and upper part of the sand beach.  Numerous. | 
| Adenorhynchus balticus Meixner, 1938 | Jan 1970 |  | sand | middle and upper part of the sand beach.  Numerous. | 
| Promesostoma serpentistylum Ax, 1952 | Sep 1969 |  |  | 0-8 m landward of the NWL.  About 20 indivduals. | 
| Lonchoplanella axi Ehlers, 1974 | Sep 1969 |  | sand | several meters under the HWL.  Few specimens. | 
| Proceropharynx litoralis Ehlers, 1972 | Sep 1969 |  | sand | Lower sand slope and front sand Watt.  Several specimens. | 
| Proceropharynx litoralis Ehlers, 1972 | Jan 1970 |  | sand | Lower sand slope and front sand Watt.  Several specimens. | 
| Zonorhynchus pipettiferus Armonies & Hellwig, 1987 | 1982-1983 |  | mud, sand | Schlicksand nahe der MHWL. | 
| Moevenbergia una Armonies & Hellwig, 1987 | Oct 1981 |  | sand | Sand mit Schlickauflage. | 
| Cirrifera cirrifera Sopott, 1972 | Jan 1970 |  |  | Hörnum.  Im Sandhang.  1 Exemplare | 
| Dicoelandropora atriopapillata Ax, 1956 | Jan 1970 |  |  | Hörnum.  Im Sandhang.  1 Exemplar. | 
| Parotoplana capitata Meixner, 1938 | Sep 1969 |  |  | Hörnum.  Im Sandwatt und Sandhang.  Mehrere Individuen. | 
| Parotoplana capitata Meixner, 1938 | Jan 1970 |  |  | Hörnum.  Im Sandwatt und Sandhang.  Mehrere Individuen. | 
| Parotoplana papii Ax, 1956 | Jan 1970 |  |  | Hörnum.  Im Sandwatt.  Mehrere Exemplare. | 
| Parotoplana papii Ax, 1956 | Sep 1969 |  |  | Hörnum.  Im Sandwatt.  Mehrere Exemplare. | 
| Parotoplanina geminoducta Ax, 1956 | Sep 1969 |  |  | Hörnum.  Im Sandhang.  Mehrere Exemplare. | 
| Parotoplanina geminoducta Ax, 1956 | Jan 1970 |  |  | Hörnum.  Im Sandhang.  Mehrere Exemplare. | 
| Praebursoplana steinboecki Ax, 1956 | Jan 1970 |  |  | Hörnum.  Im Sandhang.  Mehrere Exemplare. | 
| Praebursoplana steinboecki Ax, 1956 | Sep 1969 |  |  | Hörnum.  Im Sandhang.  Mehrere Exemplare. | 
| Nematoplana coelogynoporoides Meixner, 1938 | Sep 1969 |  |  | Hörnum.  Im Sandhang.  Mehrere Tiere. | 
| Nematoplana coelogynoporoides Meixner, 1938 | Jan 1970 |  |  | Hörnum.  Im Sandhang.  Mehrere Tiere. |