Hamborra in Fosen, Norway, features a cold-water reef and kelp forest environment located 50 metres from the shore. Divers can access the site by boat or from the shore, with depths typically ranging between 15 and 30 metres. Conditions include moderate currents and visibility fluctuating between 5 and 15 metres. Water temperatures remain between 6 and 12 degrees Celsius, necessitating the use of a drysuit. The site is suitable for beginners with an Open Water certification, though divers must remain vigilant regarding boat traffic and shifting currents. Local facilities include air fills, a dive shop, and boat charter services to support diving operations.

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.

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.

Nykorallene is a shore-entry reef dive located in Trondheim, Norway. This site is suitable for intermediate divers looking to build experience in cold-water environments. Conditions at the reef are variable, with shifting visibility and currents that require careful assessment upon arrival. Divers should maintain awareness of surface conditions, as surge and swell can occur. As there are no confirmed facilities at this location, visitors must arrive self-sufficient with all necessary equipment, including a surface marker buoy and appropriate exposure protection. Always check local conditions and access information before planning a dive.

Lektern is a shore-entry reef site located in Trondheim, Norway. This site features shallow, calm water, providing a forgiving environment suitable for beginners or those building confidence in open water. As a temperate reef habitat, the site supports a variety of marine life typical of the region, including various reef fish and invertebrates. Divers should note that conditions are variable; visibility and currents can change noticeably depending on weather and tidal movement. Facilities are not confirmed on-site, so divers should arrange air fills and equipment hire before travelling. Always check local conditions on the day of your dive.

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.

ND31 (Oder) is a shipwreck located in Trondheim, Norway, that sank on 23 August 1943. This site is strictly for technical divers due to its significant depth. Access to the wreck is by boat only. Conditions at the site are generally characterised by mild currents, though the depth remains a primary hazard for all visitors. The surrounding habitat supports a variety of temperate marine life, including various reef fish and invertebrates typical of the Trondheimsfjord region. Divers should be prepared for deep-water diving protocols when exploring this historical vessel.