Whiteish waxy substance, roughly 25×17 inches, washed up on beach.

Hi there! Looking for help identifying this object. Waxy substance found on the beach after hurricane winds. Roughly 25 x 17 inches. The grey on it is sand from rolling it up the beach. The shards are what came off it when taking it in and out of the car. The shards float and melt with a hot needle, leaving a mild organic smell. Guessing it's palm oil or paraffin from the barrel shape but hoping it could be ambergris 😅😂 can anyone burst my bubble?