SIREN
Protected Area
East of Start Point
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) - SIREN offers some of Cornwall & Devon's richest wreck diving. Water ranges 10-18°C, warmest July, August, September.
The Siren wreck, off the coast of Cornwall, is a serious dive for experienced wreck enthusiasts. Resting at 59 metres, this iron-built full-rigged ship went down in 1896 after a collision, leaving behind a substantial structure. We’ve found the bow section to be particularly intact, with the stern more broken up, though both offer plenty to explore for those with the right training and gas. You'll likely encounter conger eels lurking in the deeper sections, and spider crabs often carpet the deck plating. The visibility can be challenging, as is typical for the area, so we always plan for lower light and current. Dive this one when the conditions align, and you’ll find a fascinating piece of maritime history.
Typical SIREN Dive Profile
Illustrative profile based on site depth and type. Actual dive profiles vary - always follow your dive computer and training.
Safety Notes
Maximum depth 59m exceeds recreational limits (40m). Technical diving certification and equipment required.
Wreck site - avoid penetration without wreck diving certification. Watch for sharp metal and entanglement hazards.
Always perform a 3-minute safety stop at 5m before surfacing.
Reviews for SIREN
Conditions
Ocean conditions, forecast and tides for SIREN
SIREN Ocean Conditions
Monthly averages for SIREN, 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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