NavList:

David Lewis (whom I had the pleasure of meeting briefly when I was a student) claimed to have seen te lapa.  I never have.

But then after years of fruitlessly staring at the horizon at sunset looking for the green flash, I beleive I saw it for the first time about four years ago.  So I'll keep an open mind.

I have certainly seen luminesence well beneath the surface (in that two feet to one fathom range), as I suspect many others here have too on nights when surface luminesence is active.  It has always appeared to mimic the path of a swimming animal and I have always believed that I was just observing pelagic fish a few feet below the surface.

The subject is fascinating though.