Final answer:
Submarines, deep-sea cameras, and remotely operated vehicles (ROVs) are the technology that helped humans begin to explore the deep sea.
Step-by-step explanation:
The technology that helped humans begin to explore the deep sea includes submarines, deep-sea cameras, and remotely operated vehicles (ROVs). Submarines enable humans to descend to great depths and explore the deep-sea environment firsthand. Deep-sea cameras capture images and videos of the organisms and underwater features. ROVs are robotic devices controlled from the surface that can dive to extreme depths and gather data.