The beach's sand is actually volcanic sand/ash which is why it's black, and on a good sunny day the view is marvelous. I'm not sure if it's a lucky occurrence but we spotted jumping fish a distance away from the shore line. I didn't have time to but you can rent transparent kayaks to explore the river which apparently has a whirlpool (not that dangerous according to my guide) at the head. The water is quite clear so you may actually be able to see fishes under the kayak. Otherwise, enjoy the picturesque view of the estuary.
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