IRIS
Protected Area
The Lizard
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) - IRIS offers some of Cornwall & Devon's richest wreck diving. Water ranges 10-18°C, warmest July, August, September.
The Iris, a sailing vessel that met its end in 1846, lies just off the cliffs between Poldhu Cove and Mullion. At a shallow 8 metres, it’s a site we often suggest for newer wreck divers or anyone looking for a relaxed exploration. What remains of the Iris is well-broken, but you can still make out the general shape of a hull, particularly the ribs that stick up from the seabed. These timbers have become home to a surprising amount of life – we’ve seen plenty of wrasse darting between the frames, and often spot crabs tucked into crevices. It’s a gentle dive, perfect for extending bottom time and practising wreck navigation without strong currents or deep commitments.
Typical IRIS 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 IRIS
Dive shops near IRIS
Porthkerris Divers
Seaways Diving
DiveUK
Karleyth Diving Ltd.
Wavecrest Scuba
Dive Newquay
Reviews for IRIS
Conditions
Ocean conditions, forecast and tides for IRIS
IRIS Ocean Conditions
Monthly averages for IRIS, 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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