There are at least 18 different species of marine mammals in Raja Ampat and another 3 recorded in adjacent waters:
- Blue Whale (Balaenoptera musculus)
- Bryde’s Whale (Balaenoptera edeni)
- Omura’s whale (Balaenoptera omurai)
- Sperm whale (Physeter macrocephalus)
- Pygmy sperm whale (Kogia breviceps)
- Blainville’s Beaked Whale (Mesoplodon densirostris)
- Killer whale (Orcinus orca)
- False killer whale (Pseudorca crassidens)
- Pygmy killer whale (Feresa attenuata)
- Short-finned pilot whale (Globicephala macrorhynchus)
- Risso’s dolphin (Grampus griseus)
- Long-beaked spinner dolphins (Stenella longirostris)
- Dwarf spinner dolphin (Stenella longirostris roseiventris)
- Pantropical spotted dolphin (Stenella attenuata)
- Indo-pacific Bottlenose dolphins (Tursiops aduncus)
- Common Bottlenose dolphin (Tursiops truncatus)
- Fraser’s dolphin (Lagenodelphis hosei)
- Rough-toothed Dolphin (Steno bredanensis)
- Humpback dolphin (Sousa chinensis)
- Dugong (Dugong dugon)