Strytan

Strytan is a tower built by the sea itself: mineral-laden fresh water at around 70–80 °C has vented from the fjord floor for thousands of years, precipitating a chimney that now climbs some fifty meters off the bottom. Divers circle a structure found nowhere else at recreational depths, watching hot water shimmer out of vents like heat off summer asphalt while cod and pollack shelter in the halo of warmth. Atlantic wolffish den around the cone's base and nearby boulders, anemones crust every surface, and the whole scene plays out in a green-lit Arctic fjord. Protected since the early 2000s, it is northern Iceland's essential dive.

您此行的高光时刻: A living hydrothermal chimney, shimmering vent water, wolffish and anemone-covered slopes

地形地貌: A geothermal chimney of mineral deposits rising from about 65 m to within roughly 15 m of the surface

入水方式: Boat dive in Eyjafjordur, run from Hjalteyri near Akureyri on Iceland's north coast; tides dictate the schedule.

危险因素: Depth, cold and tidal current in the fjord; the chimney top at about 15 m is the shallowest reference.

保育: A protected natural monument — the chimney's structure is fragile, so nothing is touched and buoyancy must be dialed in.

高氧（Nitrox）: 在此值得使用——各潜点深度落在富氧空气（nitrox）能有效延长免减压时间的区间（前提是持有相应认证）。