Shark Alley, Gansbaai - Cape Town & Western Cape
Shark Alley, just off Gansbaai, is probably what you picture when someone says "shark cage diving." It's not a dive in the traditional sense, more a floating encounter, tethered to the side of a boat. The action happens between Dyer Island and Geyser Rock, a narrow channel where you can expect to see great white sharks up close, drawn by bait from the boat. Visibility here can be a bit hit or miss, often murky, but that just adds to the suspense when a large shadow materializes. This is a bucket-list item for many, totally beginner-friendly, and a genuine thrill, even if it's more observation than exploration.
- Location
- Cape Town & Western Cape, South Africa, Indian Ocean & East Africa
- Coordinates
- -34.650000, 19.380000
- Maximum Depth
- 0-5m
- Difficulty
- Beginner
Marine Protected Area: Dyer Island Nature Reserve Complex
Best Time to Dive in Cape Town & Western Cape
The warmest water temperatures in Cape Town & Western Cape occur in January, averaging 18.9°C. The coolest conditions are in December at 18.9°C.
Monthly Water Temperatures
- January: 18.9°C (air: 20.8°C)
- February: 18.9°C (air: 20.7°C)
- March: 18.9°C (air: 19.5°C)
- April: 18.9°C (air: 17.3°C)
- May: 18.9°C (air: 15.8°C)
- June: 18.9°C (air: 15.0°C)
- July: 18.9°C (air: 13.2°C)
- August: 18.9°C (air: 13.2°C)
- September: 18.9°C (air: 13.9°C)
- October: 18.9°C (air: 16.5°C)
- November: 18.9°C (air: 17.8°C)
- December: 18.9°C (air: 19.3°C)
Nearby Dive Sites in Cape Town & Western Cape
- 13th Apostle (cave)
- ADELFOTIS - 15m (wreck)
- A Frame - 5-20m (reef)
- A-frame Cape Town (pinnacle)
- A-frame Cape Town (reef)
- ALBACORE - 60m (wreck)
- Albatross Rock (reef)
- ALCESTIS - 31m (wreck)
- Alpha Reef (wall)
- AMERICA - 12m (wreck)
- Ammunition Barges - 9m (wreck)
- Andre se Gat - 15-30m (cave)
- AN HUNG NO.1 - 2m (wreck)
- Ankers (reef)
- Anvil Rock (pinnacle)
Nearest Dive Centres to Shark Alley, Gansbaai
- Alpha Dive Centre - ["PADI","NAUI"]
- Alpha Dive Centre - Strand
- Bellville Underwater Club - ["CMAS","IANTD"]
- Best Kiteboarding Africa
- Blue Flash
- Cape Town Dive Centre - PADI
Marine Life in Cape Town & Western Cape
Home to 271 recorded species including 176 reef fish, 45 sharks & rays, 28 whales & dolphins, 5 hard corals, 4 other, 4 octopus & squid.
Notable Species
- Tuna (Thunnus alalunga) - Reef Fish
- African Weakfish (Atractoscion aequidens) - Reef Fish
- California Yellowtail (Seriola lalandi) - Reef Fish
- Elf (Pomatomus saltatrix) - Reef Fish
- Rig (Galeorhinus galeus) - Sharks & Rays
- Allison's Tuna (Thunnus albacares) - Reef Fish
- Atlantic chub mackerel (Scomber japonicus) - Reef Fish
- Stripy (Katsuwonus pelamis) - Reef Fish
- Bigeye tuna (Thunnus obesus) - Reef Fish
- Jac (Helicolenus dactylopterus) - Reef Fish
- Salema (Sarpa salpa) - Reef Fish
- Angel (Brama brama) - Reef Fish
- Ribbonfish (Lepidopus caudatus) - Reef Fish
- Cosmopolitan Spurdog (Squalus megalops) - Sharks & Rays
- Shortfin mako (Isurus oxyrinchus) - Sharks & Rays
- pearl-side (Maurolicus muelleri) - Reef Fish
- Gaper (Champsodon capensis) - Reef Fish
- Blue Shark (Prionace glauca) - Sharks & Rays
- Bronze whaler (Carcharhinus brachyurus) - Sharks & Rays
- Common brittlestar (Ophiothrix fragilis)
Recommended Packing List for Shark Alley, Gansbaai
Based on average water temperature of 18.9°C.
- Wetsuit (3-5mm) - comfortable for 19°C water
- Mask - essential for every dive
- Fins
- BCD - buoyancy compensator
- Regulator - your most safety-critical piece of gear
- Dive Computer - tracks depth, time, and NDL
- Surface Marker Buoy (SMB) - essential for boat pickups
- Dive Torch - useful for crevices and colour at depth
- Underwater Camera - capture your diving memories