Wijkertunnel is an artificial reef site located in the Vinkeveense Plassen. Divers access the site from the shore, swimming approximately 90 metres to reach the structure. The site features depths ranging from 4 to 9 metres, with an average depth of 7 metres. Conditions are challenging, characterised by low visibility of 2 to 4 metres, mild currents, and potential boat traffic. Due to these factors, the site is suitable for advanced divers who possess strong buoyancy control and navigation skills. Water temperatures fluctuate between 6 and 20 degrees Celsius, requiring appropriate thermal protection throughout the year. Divers should use a surface marker buoy and exercise caution regarding entanglement risks on the reef structures.

Zandeiland 4 is a freshwater dive site located in the Vinkeveense Plassen. The site features an artificial reef and a wreck, both resting at a depth of 5 metres. It is suitable for beginner divers looking to build confidence in a controlled environment. Conditions include mild currents and visibility ranging from 3 to 12 metres. Water temperatures fluctuate between 7 and 20 degrees Celsius throughout the year, requiring appropriate thermal protection. Facilities available at the site include parking, toilets, showers, changing rooms, and air fills. Night diving is permitted at this location.

Molenplas in Grevelingen offers a reef structure ranging from 6 to 18 metres in depth. The site is accessible via both shore and boat entries, making it suitable for various training needs. Divers encounter mild currents and visibility typically between 5 and 10 metres. Water temperatures fluctuate significantly throughout the year, ranging from 7 to 20 degrees Celsius, necessitating appropriate thermal protection such as a drysuit or thick wetsuit with hood and gloves during colder months. The habitat supports a variety of temperate marine life and invertebrates typical of the region. Always remain aware of boat traffic near the shore entry point and verify current conditions before entering the water.

Zandeiland 4 is a freshwater dive site located within the Vinkeveense Plassen. The topography consists of extensive seagrass beds and a wreck that serves as a primary point of interest. With depths starting at 5 metres, the site is suitable for beginner divers. Conditions include a mild current and water temperatures ranging from 6C to 20C throughout the year. Divers should exercise caution regarding potential entanglement hazards on the wreck and sharp structures. Visibility at this site is variable and dependent on seasonal changes and recent weather patterns. Shore entry is possible, though divers should remain aware of local conditions before entering the water.

Sloterplas Ganzeneiland is a freshwater inland dive site in the Netherlands featuring an artificial reef structure. This location offers a sheltered, current-free environment suitable for beginner divers. The site is accessed via a shore entry and is located 200 metres from the shore. Divers can explore depths ranging from 10 to 30 metres, with an average depth of 20 metres. Visibility is variable, typically between 1 and 6 metres, and is often better during cooler months when algae growth is reduced. Water temperatures fluctuate between 6 and 20 degrees Celsius, requiring appropriate thermal protection such as a wetsuit or drysuit throughout the year.

Sloterplas Oost is a freshwater lake dive site located in the Vinkeveense Plassen. The site features both natural and artificial reef structures, providing varied topography for beginners. Divers can explore depths ranging from 10 to 40 metres, with a thermocline typically reported between 5 and 9 metres. Visibility is variable, ranging from 1 to 6 metres, making it a practical location for low-visibility training. The site is accessible via shore entry and is suitable for night diving. Due to boat traffic, the use of a surface marker buoy is essential during all ascents. Water temperatures fluctuate between 6 and 20 degrees Celsius throughout the year.

Haarlemmermeerse Bos is an artificial reef located in the Grevelingen, Netherlands. Divers access the site from the shore, with the main area situated approximately 50 metres out. The site features depths ranging from 5 to 20 metres, with an average depth of 15 metres. Conditions vary, with visibility typically between 1 and 10 metres. An air circulation system operates from May 1st to October 1st to manage water temperature and cyanobacteria levels. Divers should be aware of potential hazards including boat traffic, entanglement risks, strong currents, and low visibility. Facilities at the site include parking and a cafe. Night diving is permitted.

Zandeiland 4 is a freshwater site within the Vinkeveense Plassen featuring an artificial reef structure. Divers experience a drift dive profile with depths ranging from 2 to 9 metres, averaging 5 metres. Visibility is variable, typically between 1 and 4 metres. The site requires intermediate skill due to moderate currents that can strengthen rapidly and the presence of boat traffic. Shore entry is standard, though divers should be prepared for potential surf or shore break conditions. Water temperatures fluctuate between 6 and 20 degrees Celsius throughout the year. The area supports typical freshwater reef life and invertebrates. On-site facilities include parking, changing rooms, toilets, and air fills.