Hambåra Torpedobatteri is an artificial reef site located in Fosen, Norway, formed by the submerged remains of a former torpedo battery. The site extends from the surface to a maximum depth of 22 metres, offering sections suitable for beginner divers. Divers can explore the structural remnants in a marine environment that supports a variety of temperate reef fish and invertebrates. Water temperatures range from 6C to 13C, necessitating the use of a drysuit. Entry is from the shore, and while moderate currents are typical, divers must be aware of the potential for strong currents. Always check local conditions before entering the water as visibility is variable.

Ingdalen is a shore-accessible dive site in Trondheim, Norway, featuring a diverse underwater topography. The site transitions from a shallow reef and kelp forest above 10 metres to a wall that descends to 30 metres. Divers should expect mild currents and variable visibility, which typically ranges from 5 to 20 metres. Due to the depth and potential for entanglement in wall structures, this site is suited for intermediate divers. Shore entry requires careful movement, and divers should maintain conservative bottom times and monitor gas reserves throughout the 40-minute average dive duration. Navigation should be adjusted to account for visibility fluctuations.

Lysbotnfluene is a deep reef site located in Fosen, Norway, offering depths between 25 and 40 metres. This site is suited for intermediate divers who are comfortable with cold water and managing strong currents. Visibility at the reef ranges from 10 to 30 metres. Access to the site is by boat only. Divers must plan their dives carefully around the tidal cycle, as strong currents are a regular feature of this location. Water temperatures fluctuate between 6 and 12 degrees Celsius throughout the year. Due to the nature of the currents, precise timing around slack water is essential for a safe dive.

Kjeungen is a reef and cave dive site located in Fosen, Norway. Divers can explore depths ranging from 20 to 23 metres, with an average depth of 21 metres. Access to the site is by boat, and the area is subject to moderate currents. Visibility typically ranges between 5 and 10 metres. Water temperatures fluctuate between 6C and 13C throughout the year, necessitating the use of a drysuit. The site is suitable for beginner divers, though caution is required regarding boat traffic and strong currents. Divers should deploy a surface marker buoy during ascent and be mindful of sea urchins on the seabed and sharp rocks near the structures.

Irma is a wreck site located in Fosen, Norway, offering depths ranging from 13 to 42 metres with an average depth of 27 metres. This site requires boat access and is suited for intermediate divers due to strong currents and the potential for entanglement within the superstructure. Visibility typically ranges between 10 and 30 metres. Divers should plan their dives around slack water to manage the demanding current conditions. Given the depth, precise buoyancy control and careful air management are essential. Always carry a surface marker buoy and ensure reliable boat cover is present throughout the dive.

Trasavika is a reef and wall dive site located in Trondheimsfjord, Norway. The site reaches a maximum depth of 25 metres, with an average depth of 20 metres. Divers experience moderate currents and visibility ranging from 5 to 10 metres. Shore access is available, though boat entry is recommended to avoid surge and currents. The site features on-shore facilities including parking, toilets, showers, and changing rooms. Due to the cold water conditions, a drysuit is required. Divers should remain vigilant for boat traffic and use a surface marker buoy during all ascents. This site is suitable for beginners, though careful depth management is necessary.

Trolla is a shore-entry reef and wall site in Trondheim, Norway, featuring a structure that descends from 5 to 50 metres. The site is characterised by a dense kelp forest in the shallower sections, transitioning into a deeper wall that provides a clear reference for depth management. Divers should expect cold water temperatures between 4 and 15°C and variable visibility ranging from 5 to 30 metres. Currents are typically moderate but can strengthen, making it essential to plan dives around slack water. Hazards include cold water, low visibility, sea urchins, and strong currents. Night diving is permitted at this location, which typically requires an intermediate skill level.

Texaco-brygga in Trondheim is a wall dive site accessible from the shore. The site features depths ranging from 15 to 30 metres, with an average depth of 15 metres. Conditions are generally mild, though divers should be aware of entanglement hazards due to the presence of fishing line waste, as the area is frequently used for fishing. The site is suitable for beginners and provides a practical location for training. The habitat supports a variety of temperate marine life, including various reef fish and invertebrates typical of the Trondheimsfjord region. Parking facilities are available for visitors.