20
Protected Area
West Dorset Coast
Why dive here
With 176+ marine species recorded in the area - including blue sharks, dolphins, dwarf minke whales, humpback whales and ocean sunfish (mola mola) - 20 offers some of Cornwall & Devon's richest wreck diving. Water ranges 10-18°C, warmest July, August, September.
Diving the '20' in Cornwall means exploring a dangerous wreck, submerged at a shallow 5m. This site is really for experienced divers who understand the risks involved with unstable structures. What you'll find here is a challenging wreck dive, where the real draw is the wreck itself and the way it’s been colonised by various species. It’s an interesting spot for those looking for a technical wreck dive rather than a creature hunt.
Typical 20 Dive Profile
Illustrative profile based on site depth and type. Actual dive profiles vary - always follow your dive computer and training.
Safety Notes
Wreck site - avoid penetration without wreck diving certification. Watch for sharp metal and entanglement hazards.
Nearest Dive Centres to 20
Dive shops near 20
Old Harbour Dive Centre
Dive Beyond Limited
Dive academy
Scuba Blue Ltd
Scuba Scene Taunton
Edge Watersports
Reviews for 20
Conditions
Ocean conditions, forecast and tides for 20
20 Ocean Conditions
Monthly averages for 20, sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (50.44, -2.73) (3km away)
October Averages
Sea Temperature
17°C
62°F · Range: 15.1–17.5°C
Air Temperature
13°C
56°F
Wind Speed
8.14 m/s
15.8 knots
Atmospheric Pressure
1011 hPa
Based on 4 years of monitoring data · Data sources: Open-Meteo marine data
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