This is a result of a "sea bean" that was found on Moloaa Beach on the north shore of Kauai in July of 2017. Unfortunately, I did not take a photo of the seed. The seed was about 3cm in diameter, about the size, shape, and texture of a chestnut. However, it was a pale grey color with a dark grey variegation. I put it in a bag with the rest of the "sea beans" I had collected, but then noticed a small budding growth about a week later, so into a pot of perlite it went. I kept it moist and in a south facing window and grew nicely. I have searched the internet on ID sites and images, but have not found a seed, nor an image that fits this plant. I do not know if this is a Hawaiian native or a "traveler of the seas", but am interested to see if anyone can ID this.