O`ahu Natural Area Reserves
The dry, windswept coastal dunes of Ka‘ena are found at the most western point of O‘ahu. Situated at the base of the Wai‘anae Mountains, the reserve protects coastal dry shrublands and rare coastal plants. It is also a nesting area for the Laysan albatross and is regularly visited by Hawaiian monk seals. Humpback whales and several species of seabirds often can be spotted offshore from this reserve.
This reserve encompasses a complex valley system in the northern Wai‘anae Mountains. The area is known for its natural diversity and extends from the summit ridge down to the dry lowlands. The reserve contains a rare dry forest, a rare mesic forest, endangered Hawaiian tree snails, lowland mesic forests, dry shrublands, as well as a Hawaiian intermittent stream community.
Ka‘ala is the highest point on the island of O‘ahu (4,020 ft.) and is found in the northern section of the Wai‘anae Mountain Range. The fog-shrouded reserve features steep, wet slopes that descend from a montane bog to semi-wet foothills. This reserve contains some of the rarest plants in Hawai‘i.