The Giga Pearl is the world's largest natural pearl ... who was gifted the giant clam containing the pearl by Reyes's grandfather, who in turn bought it from a fisherman in the Philippines.

What's inside a clam? A retractable foot, a siphon for sucking up water, powerful muscles, and, sometimes, a pearl. And you thought oysters were fancy. Following is the transcript of the video.

The Giga Pearl is the world's largest natural pearl, as certified by the Gemological Institute of America, and worth more than $140 million. Abraham Reyes, who lives in Toronto, owns the pearl, which ...