Big Duck Boat Tours
Eco-certified marine wildlife tours on the south coast
Small-group wildlife boat tours from the Granite Island Causeway at Victor Harbor, with seals, dolphins and - in winter - southern right whales.
Wildlife on the water
Big Duck Boat Tours runs small-group marine wildlife tours from the Granite Island Causeway at Victor Harbor. The custom-built tour boat carries up to 30 passengers and is designed for close-up, low-impact viewing of the wildlife of Encounter Bay and the Southern Ocean.
What you'll see
- Australian fur seals - the colony on the eastern side of Granite Island is a highlight of most tours, with seals hauled out on the rocks year-round
- Common and bottlenose dolphins - regularly seen in Encounter Bay
- Southern right whales - present in the bay from June through September, with peak sightings in July and August
- Seabirds - cormorants, albatross and gulls
Tours
Two tours typically operate: a 1-hour Seal and Dolphin Cruise and a 2-hour Adventure Tour that ventures further around The Bluff and out towards Wright Island. Whale watch tours run in season. Bookings are essential - the boat is small and tours sell out quickly in winter.
Practical info
- Departs from the Granite Island Causeway, Victor Harbor
- Warm, waterproof clothing recommended - the open ocean is cold even in summer
- Eco-certified by Ecotourism Australia
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Sources
- Big Duck Boat Tours - official site - thebigduck.com.au (accessed April 2026)