| Genus | Pseudoceros |
| Species | gravieri |
| Authority | Meixner, 1907 |
| Family | Pseudocerotidae |
| Order | Polycladida |
| Location | Malapascua, Cebu, Philippines |
| PHOTO © Copyright | Teresa Zuberbühler, Switzerland |
| Comments | This is a quite rare documentation of mating flatworms. Check out the introductory pages to learn more about the mating behavior of marine polyclads! |