Reefwander

Koster Islands & Kosterhavet · Sweden · Reef

Östra Långholmen

Ballan and grass wrasse in the algae belt

Östra Långholmen is a very easy natural dive near Tjärnö with some cliffs on one side, an algae belt and a muddy bottom. Water exchange is poor, so the life is mostly algae and mud-bottom animals, and the dive stays within 14 m.

Also known as Östra långholmen.

Where it is and how deep

Depth profile of Östra Långholmen: typical dive to 14 m (to 46 ft) 18 m · Open Water30 m · Advanced40 m · Recreational limit14 mtypical dive
Depths on a shared scale to 40 m (130 ft); dashed lines mark common certification limits.

No published position for this site — the map shows Koster Islands & Kosterhavet and its other sites; operators know the mooring.

The dive

Some cliffs line one side, with a little dead man's fingers on the rock. Ballan wrasse and grass wrasse hold in the algae belt, while the muddy bottom carries edible crabs and the other mud-dwelling animals typical of poorly flushed water.

Marine life and season

  • Macro critters
Month-by-month season rating for Östra Långholmen
JanFebMarAprMayJunJulAugSepOctNovDec
GoodGoodGoodFairFairFairGoodGoodGoodGoodGoodGood

Season follows Koster Islands & Kosterhavet: Boats run all year and no month stands out; spring and early summer bring brown, low-salinity surface water.

Sources

  1. Östra Långholmen dykplats | dykarna.nu — dykarna.nu

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