Loch Linnhe stretches 32 kilometres from Fort William southwest into the Atlantic, its cold, nutrient-rich waters supporting one of Scotland's densest harbour seal colonies. More than 120 seals haul out on the rocky islets and skerries scattered between the Corran Narrows and the mouth of Loch Eil, their numbers swelling each spring when pups are born on sheltered shingle banks. The seals share these basalt outcrops with grey herons, cormorants, oystercatchers and Arctic terns, while white-tailed eagles patrol the shoreline and occasionally stoop over the wake of passing vessels. The Fort William Seal Island Cruise departs from the town pier at the head of the loch, where Victorian steamers once called to ferry tourists toward the newly opened West Highland Railway. The two-hour voyage follows the eastern shore past Caol and the Loch Linnhe Marine Reserve, then sweeps west across open water toward the uninhabited islands. Skippers adjust the route according to tide and season, threading between skerries at slack water or holding station off Seal Island itself when the colony is hauled out on exposed rock. The boats operate year-round, though summer months between May and September offer the longest daylight and the calmest conditions, while autumn brings migrant geese and the spectacle of salmon running up the River Lochy. Fort William's position at the junction of three sea lochs—Linnhe, Eil and Leven—has anchored its maritime economy since the 17th-century garrison was built to command the Great Glen. Commercial fishing and kelp harvesting declined through the 20th century, but wildlife tourism has grown steadily since the 1990s, when the first dedicated seal-watching operators began working from the town pier. Today the pier serves as the departure point for Loch Linnhe wildlife cruises, high-speed boat adventures into Loch Eil, and seasonal trips timed to chase the Jacobite Steam Train as it crosses the Glenfinnan Viaduct. The loch's seal population is monitored by the Scottish Marine Animal Stranding Scheme, which records sightings and tracks the health of breeding colonies along the west coast. Harbour seals give birth in June and July, and pups remain with their mothers for four to six weeks before venturing into deeper water. Grey seals, larger and less numerous, breed in autumn on more remote skerries. Both species are protected under the Marine (Scotland) Act, and boat operators follow a voluntary code that limits approach distances and engine speed near haul-out sites. The Fort William Seal Island Cruise tours operate within these guidelines, maintaining a 50-metre exclusion zone and cutting engines when seals enter the water, ensuring that repeat visits do not disturb breeding or feeding patterns.