| Citation | Smithsonian Institution, 2015 Holothuria gracilis Semper. http://collections.si.edu/search/record/nmnhinvertebratezoology_349225 [Accessed 3/5/2015]. |
| Ref. | 100413 Smithsonian Institution, 2015 |
| Page | |
| Named Used as Valid | Holothuria gracilis |
| Locality | |
| Distribution | Philippines. |