Madeira's southern shelf drops to 3,000 metres within twelve nautical miles of shore, creating a year-round corridor for short-finned pilot whales, bottlenose dolphins, and Atlantic spotted dolphins. Commercial whale watching began here in 1989 after the island's centuries-old whaling industry collapsed, and today more than twenty species of cetacean have been documented in Madeiran waters. The archipelago sits at the nexus of three major Atlantic currents, drawing migratory whales during spring and resident pods throughout the calendar. Funchal catamaran dolphin excursions operate from Marina do Funchal, a sheltered harbour built in 1989 that now serves as the region's primary departure point for marine wildlife tours. The vessels—many of them eco-certified catamarans with hydrophones and low-emission engines—carry marine biologists who narrate encounters and log sightings for the Madeira Whale Museum's ongoing population studies. Most operators enforce a voluntary code of conduct adopted in 2018: no pursuit, passive observation only, and a 50-metre minimum distance from animals. The southern coast's steep bathymetry means sightings often occur within thirty minutes of leaving port. Bottlenose dolphins favour the waters off Cabo Girão, while pilot whales congregate near underwater ridges where squid rise at dusk. Morning departures benefit from calmer seas—Madeira's trade winds strengthen after midday—and clearer visibility for spotting dorsal fins against the chop. Sighting success hovers near ninety per cent across the year, though species composition shifts seasonally: Bryde's whales pass through in autumn, sperm whales dive the deep channels in summer, and common dolphins appear in larger superpods during spring. The island's marine protected area, established in 1986 and expanded in 2021, prohibits trawling within six miles of shore. That regulatory framework has stabilised fish stocks and reinforced Madeira's reputation as one of Europe's most reliable cetacean-watching destinations. Operators now sail under biologist-led programmes that balance tourism with conservation data collection, a model adopted after earlier years of unregulated boat traffic disrupted feeding and nursing behaviours.