Svalbard

The ship is the operation. Divers live aboard for a week or more and the plan is set the night before off the ice chart and the forecast rather than off a site list, with the vessel repositioning overnight and tenders going out to whatever the bay is actually offering. Two dives is a good day and weather regularly takes one of them away. Much of the value sits above the surface anyway: landings, bird cliffs and long hours on deck watching the coast go past.

Underwater the archipelago is more productive than most people expect. Fjord walls carry dense beds of sea stars, urchins, anemones and soft corals, and the shallows grow thick weed wherever the bottom is hard. Where glaciers and rivers discharge, the sediment is a fine flour that lifts at a single fin kick and is slow to settle, so one fjord can be sharp at one end and milky at the other. Glacier fronts are dived well clear of any active face, among grounded and drifting blocks.

Walrus are the animals most visitors come north to see, and they are watched from the tenders and from shore at a distance rather than met underwater. Walrus waters are off-limits to swimmers and divers because the animals are dangerous in the water, and since January 2025 Norwegian rules keep motor vessels at least 150 m from haul-outs and under 5 knots within 300 m. Ice is the underwater set piece instead, on the days the ship finds grounded ice or floes worth diving; dives go only near icebergs that are hard aground or floating clear of brash and pack ice. Every landing runs with an armed bear watch, and bears must be given 300 m, or 500 m from March to June.

Expedition diving asks for a particular kind of diver: someone who can manage heavy gear, thick gloves and near-freezing water without a guide alongside, and who will not resent a day that produces no diving at all. Task loading is the real difficulty rather than depth or current. It works for photographers after animals and ice instead of reef, and for anyone treating the diving as one strand of a polar voyage. It is a poor fit for divers who measure a trip by the number of dives logged.