| Present plant communities are evidently ephemeral aggregations controlled by intersecting gradients of floral change. |
| They are usually found in small herds or bands during the summer, but in larger aggregations of up to around 100 individuals in the winter. |
| Large aggregations of birds can be found behind fishing boats, feeding on offal. |
| There can be large aggregations, especially in the southern half of the area. |
| Many hydrozoan species perform large vertical diel migrations, which may bring individuals together in spawning aggregations. |
| They are most commonly seen as solitary individuals, but on occasion they appear in sizable aggregations, frequently near floating kelp. |
