GUYONA - Cornwall & Devon

The *Guyona*, a compact fishing vessel resting at 51 metres, is one of our favourite deep wrecks off the Cornish coast. Dropping down, you hit the bow first, often with a bit of a current pushing you along the deck. The wheelhouse is still intact, though a bit squashed, and it’s always interesting to peek inside, imagining the last moments. What we really love about the *Guyona* is how quickly it’s become home to so much life. You'll find good-sized conger eels tucked into any available hole, and often a decent number of lobsters marching across the deck. Keep an eye out for dogfish resting on the sand nearby too. Visibility can be a real lottery out here; we've had days of 20 metres and others where it's a murky five. Best to go on a slack tide, otherwise, you're looking at a serious workout. This isn't a wreck for beginners; the depth and potential for current mean you need your wits about you, but for experienced tech divers, it’s a rewarding dive.

Location
Cornwall & Devon, United Kingdom, Mediterranean & Europe
Coordinates
49.357384, -2.406200
Type
wreck
Maximum Depth
51m

Marine Protected Area: Gouliot Caves and Headland, Sark

Best Time to Dive in Cornwall & Devon

The warmest water temperatures in Cornwall & Devon occur in January, averaging 9.6°C. The coolest conditions are in December at 9.6°C.

Monthly Water Temperatures

  • January: 9.6°C (air: 7.3°C)
  • February: 9.6°C (air: 8.4°C)
  • March: 9.6°C (air: 8.6°C)
  • April: 9.6°C (air: 10.1°C)
  • May: 9.6°C (air: 12.6°C)
  • June: 9.6°C (air: 15.2°C)
  • July: 9.6°C (air: 16.6°C)
  • August: 9.6°C (air: 17.1°C)
  • September: 9.6°C (air: 15.9°C)
  • October: 9.6°C (air: 13.5°C)
  • November: 9.6°C (air: 10.7°C)
  • December: 9.6°C (air: 8.7°C)

Nearby Dive Sites in Cornwall & Devon

Nearest Dive Centres to GUYONA

Marine Life in Cornwall & Devon

Home to 192 recorded species including 93 reef fish, 18 sharks & rays, 13 whales & dolphins, 11 crabs & lobsters, 11 other, 10 seagrass & algae.

Notable Species

Recommended Packing List for GUYONA

Based on average water temperature of 9.6°C.

  • Drysuit - water at 10°C demands a drysuit with thermal undergarments
  • Hood & Gloves (7mm+) - critical to prevent heat loss
  • 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