Crayfish from the clear lagoon waters of the Great Barrier Reef.

Panulirus ornatus migrates annually from the Torres Strait to Yule Island in the Gulf of Papua in order to breed. Migration begins in mid to late August, during which ovary development, mating, and initial oviposition occur. Larval release occurs when the Panulirus ornatus population ends migration and arrives on the reefs of the eastern seaboard of the Gulf of Papua.