Oslofjorden Dykkesenter. AS

Set in Eastern Norway, Oslofjorden Dykkesenter is the largest central dive operator in the Oslo area — a full-service centre that describes itself as having something for everyone, from beginners and holiday divers to freedivers, snorkellers and seasoned pros. As a PADI 5 Star IDC Center staffed by 20 PADI instructors, safety and learning sit at the heart of everything, whether you're taking a course, joining a trip or dropping into the shop.

Courses and diving

The centre runs eight courses and activities spanning PADI Scuba Diving, TecRec, Rebreather/CCR, Freediving, Conservation and Adaptive Diving. Highlights include the PADI Enriched Air Diver course (from USD 259, around one hour) and a Dive Against Debris day (from USD 205), reflecting a real conservation focus.

A house reef lets you get straight into the water, backed by an onsite classroom, retail shop and parking. Air fills, Nitrox, Trimix and scuba equipment rental are all on hand, and staff speak both English and Norwegian.