One of Germany's most famous diving destinations is located north towards Bremen.
A spot that is definitely more suitable for experienced divers, but also offers dive sites for beginners.

The truck on the shaker, one of the most famous motifs in Hemmoor
The lake is quite large and up to approx. 60 meters deep, offering 6 entry points, some of which are accessible by car, while others, such as the Männerwald, require a 300-400 m walk. A trolley is recommended to transport equipment to some entry points.

The dive site Männerwald, deep and cold
Visibility ranges from very good (15m) to phenomenal (50m+) year-round, but below 20 meters, the temperature drops. In summer, the surface water temperature is around 21 degrees, but at 40 meters, it's only 4-5 degrees. Depending on depth and dive length, a dry suit and appropriate heating equipment are advisable.

Remains of the railway line in this opencast mine, terraced deeper
Accommodation options are available directly on site, from campsites to bungalows and Nordic-style wooden houses.
Here are some links with information! about the accommodation options.

Wooden house for 6 people
The dive center with filling facilities is also located directly at the lake. Information here!

Stairs under the shaker at approx. 55 meters

Germany's deepest mailbox. Divers can purchase waterproof postcards at the dive center, and the mailbox is emptied once a day.

The shaker was used for cement production

Many fish especially in the shallow areas
Conclusion: The Kreidesee in Hemmoor is a must for diving in Germany, but it's also not without its challenges as a diving area; it can be deep, dark, and cold.

an airplane to dive around