The Hydrothermal Vent Prospecting Team
From Expedition 4: CTD (Conductivity-Temperature-Depth) sensors are used to detect hydrothermal plumes in the deep ocean. Learn more about CTDs »

Measuring Temperature At Hydrothermal Vents—Al Bradley’s Ingenuity
From Expedition 4: ICLs (Inductively Coupled Links) transmit data through water without a cable. Learn more about ICLs »

Fiber Optics
From Expedition 4: Fiber optic technology uses light to transmit information. Learn more about how ROV Jason uses Fiber Optics »