ABSTRAK Penelitian ini dilakukan untuk mengidentifikasi karakteristik sarang mamoa dan penetasan eks-situ (penetasan diluar habitat) yang menggunakan mesin tetas (inkubator) dan in-situ (di dalam habitat) secara semi alami. Penelitian survei dilakukan untuk mengetahui karakteristik sarang dan percobaan laboratorium untuk menentukan tingkat keberhasilan penetasan di habitat semi-alami di pantai Uwo uwo Kecamatan Galela pada kedalaman yang berbeda (20, 40, 60, 80 Kata kunci : Karakteristik sarang, penetasan, burung mamoa, telur mamoa ABSTRACT This study was conducted to identify the characteristics of mamoa's nest as a basis for semi-natural and artificial hatching experiments. Survey study was to determine the characteristics of the nest (temperature, humidity) and experiments one was to determine the hatching success rate in semi-natural habitats on the beach of Uwo uwo Galela District where naturally Mamoa lays the eggs, at different depths (20, 40, 60, 80 and 100 cm). Data analysis applied was descriptive analysis and multivariate test using SPSS computer program. Results of the study showed that in the natural nesting ground temperature of 31,88 ± 1,58 o C, and humidity of 67,00 ± 4,04%. The hole diameter of 136,20 ± 8,93 cm and hole depth of 58,17 ± 4,3 cm and the thick pile of 67,97 ± 4,33 cm, hatching success rate of In-situ reached 100% at depths of 20, 40, 60, 80 and 100 cm and ex-situ is only 75%.