Which organizations typically handle direct, hands-on deep-sea exploration, as opposed to NASA?

Answer

NOAA or academic institutions specializing in oceanography.

Direct, hands-on deep-sea exploration is typically the purview of other organizations, such as the National Oceanic and Atmospheric Administration (NOAA) or academic institutions specializing in oceanography.

Which organizations typically handle direct, hands-on deep-sea exploration, as opposed to NASA?
NASAoceanscienceexplorationagency