Hohe Düne is a shallow artificial reef located off Fehmarn, Germany. The site features depths ranging from the surface to 5 metres, making it suitable for beginners. Divers can expect mild currents and visibility between 3 and 10 metres. The environment supports a variety of temperate marine life, including reef fish and invertebrates associated with the structure and sandy patches. Water temperatures fluctuate between 4C and 19C, necessitating a thick exposure suit to prevent hypothermia. Facilities at the site include air fills, equipment rental, and guided tours. Night diving is permitted, with typical dives lasting around 45 minutes.

Bohrhammer is a wreck site located off Fehmarn, Germany, serving as an artificial reef. This site is suitable for intermediate divers who must manage moderate currents and variable visibility, which typically ranges between 3 and 6 metres. Water temperatures fluctuate significantly throughout the year, from 4C in winter to 19C in summer, requiring appropriate exposure protection. Divers should be aware of potential entanglement hazards within the wreck structure. Access is strictly by boat. The site supports a variety of temperate marine life and invertebrates typical of the region, which colonise the encrusted surfaces of the wreck.

The Waltraud Behrmann is a wreck dive located off the coast of Zealand, Denmark. The vessel rests at depths between 12 and 20 metres, with an average depth of 16 metres. Divers typically spend 40 minutes exploring the structure. Visibility ranges from 5 to 10 metres, and there is no current to manage. Due to the water temperature, which fluctuates between 4C and 15C, a drysuit or well-rated wetsuit is required. The site presents a risk of entanglement, so divers should secure all loose equipment and carry a dive knife or shears. This site is suitable for intermediate divers.

Riff Nienhagen is an artificial reef located 1500 metres offshore in the Baltic Sea. The site sits at a depth of 11 to 12 metres and is accessible only by boat. Divers encounter mild currents and variable visibility across the structure. The reef provides a habitat for various temperate marine life, including reef fish and invertebrates that colonise the artificial substrate. Due to water temperatures ranging from 4 to 17 degrees Celsius, adequate thermal protection such as a drysuit or thick wetsuit is necessary. The site is suitable for beginners, though divers must remain vigilant for boat traffic and follow descent lines closely.

Witzenbeck is a shallow shore-entry reef site located in Fehmarn, Germany. With an average depth of 4 metres and a maximum of 5 metres, it provides a straightforward environment for beginner divers. The site features a mild current and visibility typically ranging between 5 and 10 metres. Due to variable visibility and water temperatures that fluctuate between 4C and 19C, divers should maintain close contact with a surface marker buoy and wear a thick thermal exposure suit, including a hood and gloves. Practising good buoyancy is recommended to avoid stirring up sediment in this accessible, shallow reef environment.