MONA
Protected Area
Oronsay and South Colonsay
Why dive here
With 112+ marine species recorded in the area - including blue whales, dolphins, dwarf minke whales, humpback whales and ocean sunfish (mola mola) - MONA offers some of Scottish West Coast's richest wreck diving.
Diving the *Mona* on Scotland’s west coast feels like stepping into a well-preserved piece of maritime history. This steamship, once the *Margaret* before its 1908 sinking, sits at a comfortable 23 metres. It’s a good-sized wreck at 48.8 metres long, with its single boiler and compound engine still distinct. We’ve found plenty of life making a home here – large wrasse cruise the decks, and the nooks and crannies hold squat lobsters and crabs. It’s a solid dive for anyone keen on wreck exploration without extreme depths, offering a relaxed look at an older vessel.
Typical MONA Dive Profile
Illustrative profile based on site depth and type. Actual dive profiles vary - always follow your dive computer and training.
Safety Notes
Depth of 23m - Advanced Open Water certification recommended.
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 MONA
Conditions
Ocean conditions, forecast and tides for MONA
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