Washikemba–Fontein–Onima is located on the north-east coast of Bonaire and covers and area of 59.6 km² (5,960 hectares). It extends inland to the escarpments from Washikemba in the south to Playa Grandi in the north, and includes the natural springs and cliffs of Fontein and the cliffs and intermittent ponds at Washikemba, Onima and inland from Playa Grandi. The area is mostly covered in shrubland, with cacti, small shrubs and and low-growing salt-tolerant plants.
Birdlife International has designated Washikemba–Fontein–Onima as an Important Bird Area for Bonaire. The area has been denominated as IBA AN011. This site is important for the Caribbean Coot (Fulica caribaea) as this species only occurs in the freshwater reservoirs found in the area. The Yellow-shouldered Amazon (Amazona barbadensis), which is listed as vulnerable under the IUCN Red List of Threatened Species, breeds in the Onima–Fontein cliffs. The coast from Boka Onima to Washikemba is regionally important for breeding Least Tern (Sterna antillarum). Aside from the Yellow-shouldered Amazon, two other restricted-range species occur in this area: the Caribbean Elaenia (Elaenia martinica) and the Pearly-eyed Thrasher (Margarops fuscatus).Source: BirdLife International. (2008). Important Bird Areas in the Caribbean: Key sites for Conservation. Cambridge, UK: BirdLife International. (BirdLife Conservation Series No. 15).