| Country | Philippines | Ecosystem | South China Sea |
| Locality | Balaoan waters, La Union | Depth | |
| Introduced | Year Intro. | ||
| Life Stage | not specified | unsexed | |
| Quantitative | 0.02 | Unit | numbers/m^2 |
| Semi Quantitative | <100 | Unit | numbers/m^2 |
| Qualitative | rare | ||
| Year | 2010 - 2010 | Period | 2001-present |
| Date | 2012-01-01 00:00:00 - 2010-01-31 00:00:00 | Record Type | field sample |
| Record Type | field sample | ||
| Seasonal | unknown | Method | line transects |
| Remarks | Lowest recorded density of the sea urchin during the study period. | ||