| Main Ref. | Bonsdorff, E. and T.H. Pearson, 1999 | 
|---|---|
| Remarks | In the northern Baltic Sea, it is found in sand and in eelgrass beds (Refs. 95819, 95753). A slow-moving, infaunal predatory carnivore with limited swimming capability (Refs. 95728, 95752, 96470). | 
| Marine - Neritic | Marine - Oceanic | Brackishwater | Freshwater | |
|---|---|---|---|---|
| Marine zones / Brackish and freshwater bodies | 
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| Substrate | Benthic: mobile; endofauna (infauna); macrobenthos; Soft Bottom: sand; | 
|---|---|
| Substrate Ref. | Bonsdorff, E. and T.H. Pearson, 1999 | 
| Special habitats | Beds: bivalve; sea grass; | 
| Special habitats Ref. | Boström, C. and E. Bonsdorff, 1997 | 
| Ref. | Boström, C. and E. Bonsdorff, 1997 | 
|---|---|
| Associations | commensalism; | 
| Associated with | Zostera marina, Mytilus sp. | 
| Association remarks | An infaunal organism in eelgrass beds in the northern Baltic Sea (Ref. 95819). Also found in Mytilus patches and other mussel beds (Ref. 95728). | 
| Parasitism | 
| Feeding type | mainly animals (troph. 2.8 and up) | 
|---|---|
| Feeding type Ref. | Bonsdorff, E. and T.H. Pearson, 1999 | 
| Feeding habit | variable | 
| Feeding habit Ref. | Bonsdorff, E. and T.H. Pearson, 1999 | 
| Estimation method | original sample | unfished population | Remark | ||
|---|---|---|---|---|---|
| Troph | s.e. | Troph | s.e. | ||
| From diet composition | |||||
| From individual food items | |||||
| Ref. | |||||