In the early days of subsea technology, there were a number of pioneers: men and women who stepped over the edge of what we knew about the underwater world. These individuals left the comfort of solid ground to explore beneath the waves and report back to the rest of us what they had seen. They pushed boundaries, raised the stakes and in some instances opened our minds to the possibilities. They were subsea visionaries. Today, those boundaries continue to be pushed, and undersea technology, now more than ever, is reaching new heights.