| Macrostomum pusillum Ax, 1951 | Jul 16, 1988 |  | sand | Intertidal sandflat behind a dune wall. | 
| Macrostomum tenuicauda Luther, 1947 | Jul 16, 1988 |  |  | Lower beach slope behind a dune dam. | 
| Minona dolichovesicula Tajika, 1982 | Jul 16, 1988 |  | sand | Sandy beach behind a dune wall, abundant. | 
| Maehrenthalia americana Ax & Armonies, 1990 | Jul 16, 1988 |  | sand | Eastern shore and wadden area in the lower sandy shore. | 
| Maehrenthalia americana Ax & Armonies, 1990 | Jul 16, 1988 |  | mud | Eastern shore and wadden area abundand in intertidal mud with algal cover. | 
| Maehrenthalia americana Ax & Armonies, 1990 | Jul 16, 1988 |  | mud | Eastern shore and wadden area muddy sediment from a salt marsh pool (salinity 35 o/oo). | 
| Promesostoma alaskanum Ax & Armonies, 1990 | Jul 16, 1988 |  |  | Beach slope of the eastern shore. | 
| Proxenetes arctica Ax & Armonies, 1990 | Jul 16, 1988 |  | mud | Eastern shore; intertidal mud with algal cover and muddy sediment from salt marsh pools. | 
| Phonorhynchus helgolandicus (Metschnikow, 1865) | Jul 16, 1988 |  | mud | Intertidal mud with algal cover at the eastern shore. | 
| Duplacrorhynchus major Schockaert & Karling, 1970 | Jul 16, 1988 |  | mud | Intertidal mud with algal cover. | 
| Duplacrorhynchus major Schockaert & Karling, 1970 | Jul 16, 1988 |  | mud | Mud from salt marsh pools (salinity 35 o/oo). | 
| Baicalellia anchoragensis Ax & Armonies, 1990 | Jul 16, 1988 |  | mud | Upper intertidal mud with algal cover and salt marsh pool with muddy sediment (low tide salinity in pools containing the species = 2-3, 8, and 35 o/oo). |