The Big Island’s newest black sand beach, at Pohoiki, was formed during last year’s eruption of Kilauea Volcano. Soon after its formation, offerings appeared at the beach and coconuts were planted.
For coconut planting, all that’s required is to plunk an unhusked coconut on the beach and wait. The coconut will sprout, as in these photos, but it can still be moved after it has sprouted as its roots are mostly fairly shallow. It’s tolerant of salinity, but likes regular rainfall, both of which are features of this location.
In several years, this somewhat stark black sand beach will become another scenic palm-lined tropical beach. That’s assuming the volcano doesn’t send another flow in this direction, in which case it might look more like the background of the bottom two photos.