Portlock

Portlock is my favorite shoreline cliff area on Oahu. Its a place that never has very many people. Its pretty difficult to find as its tucked away off the main Highway in the housing devolepments near Hawai'i Kai.

The shoreline of Portlock is made up of tuff material (compacted ash) from the explosive eruption of the tuff cone that created Hanauma Bay. Portlock, is on the outide edge of the crater while Hanauma Bay is within the crater. This of course makes Portlock very exposed to wave action and thus, a fairly dangerous place to swim. But for advanced swimmers and divers, its a great place to dive. The water when you jump in is already about 25 feet deep. The bottom is full of rock-boring sea urchins, Pocillopora corals, and moray eels.

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