| Main Ref. | Dickson, R., 2002 | 
|---|---|
| Remarks | Surf-zone to 40 m. Usually found on stony or rocky bottoms (Ref. 290); in the middle intertidal zone from Alaska to Point Conception; North of Santa Barbara; also on rocky shore with heavy wave action (Ref. 312). Herbivorous, feeding primarily on red and green algae and benthic diatoms (Ref. 312). | 
| Marine - Neritic | Marine - Oceanic | Brackishwater | Freshwater | |
|---|---|---|---|---|
| Marine zones / Brackish and freshwater bodies | 
						
						
						
  | 
						
						
						
						
  | 
						
						
						
						
  | 
						
						
						
						
  | 
					
| Substrate | Hard Bottom: rocky; | 
|---|---|
| Substrate Ref. | |
| Special habitats | Beds: algae/seaweed; | 
| Special habitats Ref. | 
| Ref. | Dickson, R., 2002 | 
|---|---|
| Associations | |
| Associated with | |
| Association remarks | |
| Parasitism | 
| Feeding type | mainly plants/detritus (troph. 2-2.19) | 
|---|---|
| Feeding type Ref. | Gallivan, G. and J. Danforth, 1999 | 
| Feeding habit | browsing on substrate | 
| Feeding habit Ref. | 
| Estimation method | original sample | unfished population | Remark | ||
|---|---|---|---|---|---|
| Troph | s.e. | Troph | s.e. | ||
| From diet composition | |||||
| From individual food items | 2.00 | 0.00 | Trophic level and s.e. inferred from exclusive plant/detritus food items. | ||
| Ref. | |||||