Flydedok in Alssund is a challenging site defined by its wall and reef topography, suited for intermediate divers. Located in the Little Belt, the site is characterised by strong tidal currents that dictate the dive plan. Depths range from 15 to 18 metres, with an average of 16 metres. Visibility typically spans 5 to 10 metres. Due to cold water temperatures between 4 and 14 degrees Celsius, a drysuit is recommended. Shore entry is standard, and the site is supported by facilities including air fills, showers, and changing rooms. Divers must monitor boat traffic and use a surface marker buoy throughout the dive.

Alssundbroen is a drift dive site located in the Alssund, Denmark. Divers can explore the bridge piers and the surrounding slope, which features a bottom covered in mussels. The site reaches a maximum depth of 11 metres. Access is via a shore entry. Conditions are variable, with visibility ranging from 1 to 10 metres and water temperatures fluctuating between 4C and 17C throughout the year. Due to the nature of the location, divers must be aware of strong currents, active boat traffic, and the presence of local fishermen. This site is suitable for beginners, though caution regarding surface hazards is essential.

Holnis is a shore-entry reef dive located in the Flensburg Fjord, Northern Germany. The site reaches depths between 10 and 20 metres and is suitable for beginners due to the mild currents. Visibility typically ranges from 5 to 10 metres. Water temperatures are cool, fluctuating between 4 and 15 degrees Celsius throughout the year, necessitating the use of a drysuit or thick wetsuit. As facilities are not confirmed at this location, divers should plan to be self-sufficient with all necessary air and equipment. The site provides a calm environment for those building their open-water confidence.

The Inger Klitt Wreck is a marine dive site located in Northern Germany. The wreck lies at depths ranging from 5 to 20 metres. Divers should be prepared for moderate currents and visibility consistently around 5 metres. Given the variable water temperatures, which fluctuate between 4 and 19 degrees Celsius throughout the year, appropriate thermal protection is required. The site is accessed by boat. Divers are advised to plan their route to swim into the current during the initial phase of the dive to facilitate an easier return. Local conditions should be verified before planning a trip.

The Hans Waldau is a wreck site located in Northern Germany, resting at a constant depth of 27 metres. This boat-only dive is suited for intermediate divers due to the combination of cold water, moderate currents, and an overhead environment. Visibility is limited to approximately 5 metres, requiring precise buoyancy control and navigation skills. Divers should be prepared for water temperatures ranging from 4 to 14 degrees Celsius, making drysuit use essential. The site presents specific hazards including entanglement risks and potential for strong currents, necessitating a methodical approach. Divers are advised to check local tidal windows to plan for slack water and to use a reel when exploring interior sections.

Osterholz is a shallow shore dive located in Northern Germany, offering a practical site for divers to gain experience. The site features depths ranging from 4 to 8 metres, with an average depth of 6 metres. Divers can expect mild currents and visibility between 5 and 10 metres. Due to the significant seasonal temperature fluctuations, which range from 4 to 18 degrees Celsius, appropriate thermal protection is required. The site is accessible year-round directly from the shore, making it a convenient location for regular practice. Divers should remain aware of local conditions, including the potential for low visibility and cold water temperatures.

Kollund Lillestrand is a shallow muck dive site located in the Alssund area of the Little Belt. Divers access the site directly from the shore, entering via a gradual beach slope. The site reaches a maximum depth of 9 metres, with an average depth of 5 metres. Conditions are generally manageable due to mild currents, though visibility can be highly variable. Water temperatures fluctuate between 4C and 17C, necessitating appropriate thermal protection. The seabed consists of sand and silt, providing a habitat for various temperate marine life and invertebrates. This site is suitable for beginners and offers convenient access with nearby parking and toilets.

Kaegnaes Faerge is a reef site located in the Alssund strait, characterised by strong currents that dictate the diving experience. The reef sits at depths between 8 and 12 metres, with an average depth of 10 metres. Divers access the site via a shore entry approximately 50 metres from the coast. Visibility typically ranges from 5 to 10 metres. Due to the significant current, this site is suited for intermediate divers with strong buoyancy control. Water temperatures fluctuate between 4C and 17C, requiring appropriate thermal protection. Divers should consult local tidal tables to plan their entry around slack water to manage the current effectively.