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| site | collection date | depth | substrate | salin | locality kind | comments | reference | |
|---|---|---|---|---|---|---|---|---|
| A | Antonovo (Rakumaka, Rakuma) village, north of Kholmsk, southern coast of Sakhalin (Saghalien, Saghalin, Karafuto, Kabafuto) Island, Russia | 1946 | 1-2 m | sand, gravel, silt | type locality | overgrown with Zostera, and with an infusion of Sargassum and other seaweeds. Sargassum yielded large numbers of specimens, but also found in gravel in the Laminaria Zone among the rhyzoids. | Ivanov AV (1952) 40, 41 |