The Wall - West Cay - St. Vincent

The Alonissos National Marine Park isn't just one dive site, it's a whole protected zone with several standout spots. We’re particularly drawn to the historical wreck diving here, especially the *Peristera* shipwreck. Dropping down onto that ancient merchant ship, lying at around 25-30 metres, feels like falling back through time. You can make out amphorae still resting in the cargo holds, sometimes even stacked, just as they were thousands of years ago. For us, the real magic is how the wreck has become a living reef. Schools of bogue and damselfish drift through the broken hull, and we’ve spotted morays peeking from behind jars. Look closely and you’ll find jewel anemones clinging to the pottery shards and vibrant red coral starting to encrust the old wood. It’s not a drift dive; it’s a slow exploration, perfect for photographers wanting to capture history and marine life intertwined. We’d suggest going in the shoulder seasons, late spring or early autumn, when the crowds thin out but the water’s still warm and the visibility usually pushes past 20 metres.

Location
St. Vincent, St. Vincent & the Grenadines, Caribbean
Coordinates
12.990900, -61.290100
Type
wreck

Wreck History - The Wall - West Cay

Year Sunk
-425
Vessel Type
cargo ship
Cause
storm

The Alonissos National Marine Park isn't a single wreck, but a protected underwater realm containing a treasure trove of maritime history. As Europe's largest marine protected area, it's a sanctuary for monk seals and dolphins, but for divers, its most famous jewel is the Peristera wreck. Discovered in the early 1990s, this isn't just any wreck; it's a massive Athenian merchant ship from the 5th century BC that went down in a storm, earning it the nickname the "Parthenon of Shipwrecks."

The vessel was carrying a cargo of some 4,000 wine amphorae, and the sight of them today is breathtaking. The ship's wooden hull has long since rotted away, but the enormous mound of ceramic jars remains, perfectly outlining the shape of the ship on the seabed. For years, this incredible site was off-limits to the public, but it has now been opened as Greece's first underwater museum. Certified divers can explore this astonishing piece of ancient history, swimming over a cargo that was last seen by human hands over 2,400 years ago.

Marine Protected Area: West Cay Wildlife Reserve

Best Time to Dive in St. Vincent

The warmest water temperatures in St. Vincent occur in January, averaging 27.8°C. The coolest conditions are in December at 27.8°C.

Monthly Water Temperatures

  • January: 27.8°C (air: 25.7°C)
  • February: 27.8°C (air: 25.8°C)
  • March: 27.8°C (air: 26.1°C)
  • April: 27.8°C (air: 26.8°C)
  • May: 27.8°C (air: 27.5°C)
  • June: 27.8°C (air: 27.4°C)
  • July: 27.8°C (air: 27.3°C)
  • August: 27.8°C (air: 27.6°C)
  • September: 27.8°C (air: 28.2°C)
  • October: 27.8°C (air: 27.9°C)
  • November: 27.8°C (air: 27.0°C)
  • December: 27.8°C (air: 26.4°C)

Nearby Dive Sites in St. Vincent

Nearest Dive Centres to The Wall - West Cay

Marine Life in St. Vincent

Home to 271 recorded species including 237 reef fish, 10 hard corals, 7 whales & dolphins, 4 sea snails & nudibranchs, 3 seagrass & algae, 3 sharks & rays.

Notable Species

Recommended Packing List for The Wall - West Cay

Based on average water temperature of 27.8°C.

  • Shorty or Rashguard - warm 28°C water needs minimal exposure protection
  • 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