My Ewa dive site was not exactly off Ewa on Oahu's southwest shore. Rather, it ran from directly off the mouth of Pearl Harbor some distance towards Ewa to the west. This was quite a ways offshore and was strictly a boat dive. I first went there with some friends who were seeking the endemic cowry Cypraea semiplota, a population of which had recently reappeared there after being all but absent for some years throughout Hawaii.
The site was a mostly flat hard bottom with some shallow sand drifts and lots of loose rocks at a depth of 12 to 15m. The cowries lived under the rocks, but so did quite a few kinds of nudibranchs. It was there that I found my first Flabellina exoptata, as well as a number of Hypselodoris violabranchia and some of the real Thorunna daniellae (instead of the T. kahuna that were so common at Magic Island). There were also a few Hypselodoris imperialis.
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