Karholmen Ost is a deep-water site located off the coast of Drøbak and Vestby, Norway. The topography drops sharply from 20 to 70 metres, requiring advanced technical skills and careful gas management. Divers encounter moderate currents and visibility ranging from 10 to 30 metres. Due to the significant depths and potential for nitrogen narcosis, decompression planning is essential. Water temperatures fluctuate between 4 and 18 degrees Celsius, necessitating the use of a drysuit. Access to this site is by boat only. Divers must remain vigilant regarding active boat traffic in the area and should deploy a surface marker buoy throughout the dive.

Muren vest in Drøbak and Vestby is a wall and drop-off site suited for intermediate divers. The topography descends from 12 metres to 22 metres, with an average depth of 17 metres. Divers should expect moderate currents and plan for a drift dive along the structure. Visibility typically ranges between 5 and 10 metres. Access is by boat only, and divers must remain vigilant regarding boat traffic at the surface. Due to the variable water temperatures between 4 and 18 degrees Celsius, appropriate thermal protection is required. Deploy a surface marker buoy before ascending and maintain close proximity to the wall throughout the dive.

Steinbit is a shore-entry reef site located in Drøbak and Vestby, Norway. The site features a consistent depth of 11 metres, making it suitable for beginner divers. Divers can expect mild currents and visibility ranging from 3 to 15 metres. Water temperatures fluctuate significantly throughout the year, reaching a high of 18C in July and August and dropping to 4C during the winter months. Typical dive times at this location are approximately 50 minutes. Facilities available at the site include parking and toilets. Due to the potential for low visibility, divers should plan their dives accordingly.

Sør for Høya is a reef and artificial reef site located 50 metres from the shore in Drøbak and Vestby, Norway. Divers typically experience a depth of 12 metres with mild currents and visibility ranging from 5 to 15 metres. The site is suitable for beginners and offers a typical dive duration of 40 minutes. Water temperatures fluctuate significantly throughout the year, ranging from 4C in winter to 18C in summer, though temperatures below 5 metres generally remain around 8 to 9C. Shore access is supported by local facilities including parking, toilets, showers, a rinse station, and air fills available at a nearby dive shop.

Helikopterplassen is a wall and reef dive site located in Drøbak and Vestby, Norway. This shore entry site offers depths ranging from 12 to 24 metres, with an average depth of 18 metres. Divers should be prepared for strong currents, which are a notable hazard at this location. Visibility is variable, ranging from 10 to 30 metres depending on conditions. Water temperatures fluctuate significantly throughout the year, from a low of 4C in the winter months to 18C during the summer. Parking facilities are available for divers accessing the site. Due to the current, this site requires careful planning and is suitable for those comfortable with moving water.

DS Edith is a reef site in Southern Norway accessible by boat. The topography features a drop-off ranging from 28 to 75 metres, requiring careful depth management and buoyancy control. Divers should expect moderate currents and visibility between 5 and 10 metres. Due to the depth profile, the site is suited for advanced divers. Water temperatures fluctuate between 4 and 18 degrees Celsius, making a drysuit advisable outside of the summer months. Species recorded around this area include various nudibranchs, sea slugs, sea hares, common sea stars, and snails. Divers should be aware of sea urchins on the reef structure and maintain buoyancy to avoid contact with the wall.

Muren is a wall and artificial reef site in Southern Norway, offering depths between 25 and 30 metres. The site is characterised by strong currents, requiring intermediate skill levels and careful buoyancy management. Visibility typically ranges from 5 to 10 metres. Water temperatures fluctuate significantly, from 4C in winter to 18C in summer, making a drysuit advisable. Divers can access the site from both shore and boat. Due to heavy boat traffic, the use of a surface marker buoy is essential during ascent. Night diving is permitted, and divers should plan their entry around slack water to manage the current effectively.

Pumpehuset is a shore-entry dive site in Drøbak and Vestby, Norway, featuring a combination of reef and wall topography. Divers can explore depths ranging from 8 to 20 metres, with an average depth of 15 metres. The site is suitable for beginners, offering a clear wall structure to navigate. Visibility typically ranges between 8 and 15 metres. Conditions include moderate currents and water temperatures fluctuating between 4C and 18C, necessitating appropriate thermal protection. The site is accessible for night diving. Divers should exercise caution regarding surf and shore break during entry and remain vigilant for boat traffic in the area.