Worlds Beneath the Waves Exhibition opens at Portsmouth Historic Dockyard

Worlds Beneath the Waves at the National Museum of the Royal Navy marks 150 years since HMS Challenger’s remarkable circumnavigation.

From the early days of deepwater exploration when it took a crew of 250 to keep the ship steady enough to collect samples, to the modern-day era of hi-tech minisubs, a century and a half of oceanographic missions is being celebrated.