LONGSAND
Protected Area
Chesil Beach and The Fleet
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) - LONGSAND offers some of Cornwall & Devon's richest wreck diving. Water ranges 10-18°C, warmest July, August, September.
Longsand is a strange beast of a dive, and one we genuinely love for its oddity. Forget dramatic drop-offs or pristine reefs, this is a shallow, historical site that tells a story. We’re talking about the remains of a grounded barge, later salvaged and cut up, leaving behind a scatter of metal plates, ribs, and general wreckage at a uniform four metres. You really get a sense of the sheer force of the sea and human intervention here. What you’ll find is a surprisingly busy ecosystem on and around these industrial remnants. It’s less about grand structures and more about the nooks and crannies. Look for blennies peeking out from rusted holes, crabs scuttling under plates, and small shoals of pollack weaving through the exposed beams. We’ve had some cracking dives here on a sunny day with good visibility, when the light penetrates right down, making the metal gleam and highlighting the green and brown algae coating everything. It’s a site best enjoyed on a calm day, and keep an eye on the tide; a low tide can make entry and exit a bit easier. This is a perfect site for newer divers or those who prefer a relaxed bimble, but it’s also fantastic for photographers who enjoy macro work and capturing the interaction between industry and nature. It’s not a deep, blue plunge, but it’s an honest, interesting piece of history brought to life.
Typical LONGSAND 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 LONGSAND
Dive shops near LONGSAND
Old Harbour Dive Centre
Dive Beyond Limited
Divers Down
Dorset Diving Services
Mayim Mermaid Academy
Dive academy
Reviews for LONGSAND
Conditions
Ocean conditions, forecast and tides for LONGSAND
LONGSAND Ocean Conditions
Monthly averages for LONGSAND, 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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