Dive-site story
Resting upright on the silty seabed off the Istrian coast, the John Gilmore wreck is a historic armed merchant steamer lost during the First World War. Divers descending the shot line meet the intact superstructure before exploring the open cargo holds, deck machinery, and encrusted stern. Due to the bottom profile, bottom time requires careful gas management and disciplined decompression planning.
Well-preserved merchant steamer sitting upright on the sea floor
Large steam engine components and deck machinery overgrown with invertebrate life
Dense concentrations of fish taking shelter in the open cargo holds
Location
Use the map to plan with your operator and confirm the exact entry point on the day.
Seasonality
Late spring through early autumn offers the calmest sea conditions and warmest surface layers, though a sharp thermocline persists at depth.
Marine life
| Species | Likelihood | J | F | M | A | M | J | J | A | S | O | N | D |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| European conger eelConger conger | Common | ||||||||||||
| European lobsterHomarus gammarus | Common | ||||||||||||
| Black scorpionfishScorpaena porcus | Common | ||||||||||||
| Poor codTrisopterus minutus | Common | ||||||||||||
| Mediterranean damselfishChromis chromis | Common |
Marine forecast
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