Blausee is a private freshwater lake in the Bernese Oberland, Switzerland, accessible for diving during the winter months. The site features a compact layout with large boulders and submerged trees visible throughout the dive. Divers typically experience depths between 10 and 12 metres, with an average depth of 10 metres. Visibility ranges from 5 to 15 metres. Water temperatures are approximately 8°C, dropping to 6°C in March, making cold water the primary hazard. Shore entry is standard for this location, which is suitable for beginners. Advance booking is mandatory for all divers wishing to access this private site.

Gipsunion is a freshwater reef site located on the shores of Lake Thun in the Bernese Oberland. The topography features a distinct reef structure punctuated by unusual underwater igloos. Divers can expect visibility ranging from 5 to 10 metres with no significant current. The site reaches depths between 20 and 40 metres, making it suitable for both beginners in the shallower sections and experienced divers looking for deeper profiles. Access is via a simple shore entry. Due to the cold water temperatures, a drysuit or a thick wetsuit with hood and gloves is strongly recommended for all divers.

Restaurant Lido in Lake Thun offers a shore-accessible dive featuring a combination of natural and artificial reef structures. The site reaches depths between 20 and 40 metres, with an average depth of 25 metres. Divers should expect visibility ranging from 5 to 10 metres. Due to the significant depth and cold water temperatures, which vary from 4 to 20 degrees Celsius depending on the season, adequate thermal protection is required. The site presents potential entanglement risks near the artificial structures, and divers must manage their depth carefully. Facilities including parking, toilets, showers, and a cafe are available on site, making it a practical base for a full day of diving.

Spiezwand in Lake Thun offers a distinct freshwater wall dive featuring submerged trees along the rock face. The site reaches depths between 5 and 30 metres, with an average depth of 15 metres. Divers should anticipate mild currents and visibility ranging from 3 to 10 metres. Water temperatures fluctuate significantly, from 4°C in winter to 19°C in summer. Due to the potential for cold water, entanglement risks, and low visibility, this site is suited for intermediate divers. Shore access is supported by local facilities including parking, showers, changing rooms, a rinse station, air fills, a dive shop, and a cafe.

Därligen is a shore-entry dive site located on the banks of Lake Thun in the Bernese Oberland. The site is characterised by a shallow reef structure that allows for relaxed diving and skill practice. Because the depth remains shallow throughout the area, it is well-suited for divers who are just starting out. Access is direct from the shore, removing the need for a boat. Visibility at this location is variable, and conditions can differ between visits. Divers should check locally for current facility availability before heading out, as amenities may change seasonally. Visiting on a calm, overcast day can help reduce surface glare.

Nastel is a freshwater shore-entry site in Lake Thun featuring both reef and wall topography. Divers can explore a vertical wall structure that descends from 8 to 46 metres, with an average depth of 15 metres. Conditions include mild currents and visibility ranging from 5 to 15 metres. Due to the cold water, which fluctuates between 10°C and 18°C, thermal protection such as a drysuit or thick wetsuit is essential. The site is suitable for intermediate divers who should be prepared for variable visibility. Parking is available at the site, facilitating straightforward gear transport for shore entries. Typical dive times are approximately 40 minutes.

Kleine gelbe Wand is a shore-entry wall and reef dive located in Lake Thun. The site features a wall structure that descends into depths between 20 and 40 metres, with an average depth of 30 metres. Visibility is consistently around 5 metres, making a torch useful for observing details on the wall face. There is no current, allowing for a methodical dive along the structure. Species recorded around this area include snail, common perch, burbot, American crayfish, barbel, bullhead, and pike. Divers should arrange air fills and equipment in advance as facilities are not confirmed on site. This site is suitable for intermediate divers comfortable managing depth limits.

Seezeichen is a shore-entry freshwater dive site located in Lake Thun. The topography features a reef structure that descends from a shallow 5 metres to a maximum depth of 46 metres, with an average depth of 15 metres. Divers should anticipate moderate currents and visibility ranging between 6 and 10 metres. Due to active boat traffic in the area, it is essential to remain alert while surfacing and to deploy a surface marker buoy. The site is suitable for intermediate divers, with parking available nearby to facilitate gear transport. Typical dives last approximately 40 minutes, though conditions vary significantly with seasonal temperature changes.