Bettany Hughes and Lucy Blue dive into the world of underwater archaeology, joined by Jacques Cousteau's grandson Philippe. They discover how technology has changed since the invention of the aqualung and explore how divers are now reaching depths of over 100 metres.

#titanic #maritimehistory #history #marinearchaelogy #diving #scuba #bettanyhughes #honorfrost #bobballard #philippecousteau #underwaterhistory #nautical