Matt is a british expat who has been leading divers in thailand for a decade. he knows this territory like the back of his hand. >> there's always a buzz and make the adrenaline and you know you'll see the ferocious animal and you can play with her, stroke her and of course, feed her. >> after all, emma is known for her hearty appetite. in fact, she's adored throughout the dive community in thailand, and tour groups flock to see emma in her beautiful feeding grounds. >> the dive guys used to take sausages, and leftovers from breakfast and maybe become complacent and she was more like a friendl...