Keller Laros, a scuba diving trainer in Hawaii, completed his 10,000th dive last month in his favorite location known as the "Suck 'Em Up" lava tube, where he has seen many animal species over the years. It took Laros 28 years and over 312 days spent underwater to reach 10,000 dives. In addition to teaching, Laros has become a researcher and advocate for manta rays, earning him the nickname "Manta Man".