The ocean is still largely unexplored. Underwater tech could help illuminate its mysteries.

This article is part of "5G and Connectivity Playbook," a series exploring some of our time's most important tech innovations.

Nestled next to a park and tucked inside an inlet, Wahoo Bay boasts a half-acre of glistening, shallow water in Pompano Beach, Florida, home to tropical fish and endangered seagrass.

But below the surface, the mini marine sanctuary is also a test bed for underwater technology that may take researchers to literal new depths.