Indian Arm is the southernmost true fjord in North America, a glacial trough that plunges 210 metres below sea level and extends 20 kilometres north from Burrard Inlet into the Coast Mountains. Carved during the Fraser Glaciation 15,000 years ago, the waterway separates the District of North Vancouver from the mountains of Belcarra and Anmore, its steep granite walls rising nearly vertically to summits above 1,200 metres. The Tsleil-Waututh Nation has navigated these waters for millennia, harvesting salmon and shellfish from protected coves and using the sheltered corridor as a seasonal travel route between winter villages and interior hunting grounds. Today, Indian Arm remains one of the least developed coastal inlets within Metro Vancouver, accessible only by boat or floatplane. Its narrow profile and mountain barriers create a microclimate distinct from the city: calmer surface conditions, frequent temperature inversions, and a concentration of marine wildlife drawn to the nutrient-rich outflow from the Indian River. Harbour seals haul out on rocky islets near Racoon Island, river otters patrol the shallows, and bald eagles nest in old-growth Douglas firs along the western shore. The inlet terminates at the delta of the Indian River, where meltwater from the snowfields of Mount Seymour Provincial Park tumbles over Granite Falls in a 60-metre cascade visible from the water. The fjord's isolation has preserved ecological corridors that vanished elsewhere in the Lower Mainland. Black bears forage along the shoreline in spring, and pods of Pacific white-sided dolphins occasionally enter the inlet during herring runs. Industrial logging reached the upper inlet in the 1920s, but second-growth forests now blanket the slopes, and the provincial park system protects the watershed above the falls. A handful of floating homes and private docks occupy the eastern shore near Belcarra, remnants of early 20th-century homesteading, but the majority of the coastline remains roadless. Indian Arm boat tours operate year-round from Coal Harbour and Deep Cove, with Zodiac-style vessels and covered cruisers offering routes to Granite Falls, Twin Islands, and the seal colonies. Departure schedules align with tidal windows and daylight, with morning trips favoured for calmer water and better wildlife visibility. The inlet's sheltered geography makes it navigable in most weather, though winter storms occasionally suspend service. Free access to the fjord itself is maintained through provincial law, though chartered tours and guided excursions require advance booking and carry variable fees depending on vessel type and route duration.