Vellerup at Hesselø is a shallow marine site featuring a combination of reef and seagrass habitats. Divers can expect an average depth of 3 metres, with recorded depths ranging between 2.7 and 3 metres. Access is via the shore. Conditions at the site are variable, with visibility reaching up to 10 metres and currents generally described as mild. Water temperatures fluctuate significantly throughout the year, ranging from 4C in the winter months to 19C in August. This site is suitable for beginners due to its shallow nature and manageable conditions.

Grønlandshuse, located at Hesselø, Denmark, is a shallow marine dive site with depths ranging between 3 and 5 metres. The site offers a temperate environment suitable for divers, with water temperatures fluctuating significantly throughout the year, from 4C in the winter months to 19C in August. The habitat supports a variety of temperate marine life, including various reef fish and invertebrates typical of the region. Given the shallow depth, the site is accessible for divers looking for a relaxed experience in these northern waters. Conditions at this location vary, and divers should be prepared for seasonal temperature changes.

Tandstumpen is an artificial reef located 100 metres from the shore of Hesselø, Denmark. This shallow site is suitable for beginners, with an average depth of 3 metres and a maximum depth of approximately 3 metres. Divers can expect mild currents and visibility ranging from 2 to 7 metres. The water temperature fluctuates significantly throughout the year, from 4C in winter to 19C in August. The site supports a variety of temperate marine life typical of the region, including various reef fish and invertebrates. Divers should remain aware of potential boat traffic and entanglement hazards in the area. Typical dives at this location last around 30 minutes.

Karlstrup Kalkgrav is a freshwater limestone pit located in Stevns Klint, Denmark. This artificial site features old roads from historical limestone extraction that took place between 1957 and 1975. Divers enter from the shore on the south side of the pit. The site reaches depths of 8 to 14 metres, with an average depth of 11 metres. Visibility ranges from 5 to 15 metres, though fine silt can reduce clarity. Water temperatures fluctuate between 4C and 19C throughout the year, requiring thermal protection. The site is suitable for intermediate divers and supports night diving, with typical dive times around 40 minutes. Parking is available at the site.

Havnsø is a shallow reef site located near Hesselø, Denmark, suitable for beginner divers. The site features a maximum depth of approximately 2.5 metres, making it a shallow environment for short dives averaging 30 minutes. Entry is conducted from the shore. Conditions are generally mild, though water temperatures fluctuate significantly throughout the year, ranging from 4C in winter to 19C in August. The site is well-supported by local facilities, including parking, toilets, showers, changing rooms, a rinse station, and a nearby cafe for post-dive refreshments.

Hundested Havn near Hesselø offers shallow marine diving at depths between 3 and 4 metres. The site is suitable for divers seeking calm, shallow conditions, with water temperatures ranging from 4C in winter to 19C in August. Divers frequently encounter wrasses, snails, and European green crabs among the local marine life. Less common sightings include giant jellyfish, common moon jellyfish, common sea stars, righteye flounder, shrimp, pipefish, rockpool prawns, sea squirts, and pout. Given the shallow depth, the site is accessible for beginners and provides opportunities for both diving and snorkelling in a sheltered harbour environment.

Hajen is an artificial reef located off Hesselø, Denmark, providing a shallow, sheltered environment suitable for beginner divers. As an artificial structure, it offers a controlled introduction to cold-water diving, though conditions such as depth and visibility are variable. Divers should be prepared for water temperatures ranging from 4C in winter to 19C in summer, necessitating appropriate thermal protection. Entry is via the shore, where divers should shuffle their feet to avoid sea urchins. Hazards include boat traffic, requiring the use of a surface marker buoy, as well as potential entanglement in kelp forests and strong currents. Always monitor local conditions before planning a dive.

Klint Havn at Hesselø is a shallow marine dive site characterised by seagrass beds. The site is suitable for beginners, with an average depth of 2 metres and a maximum depth of approximately 2.4 metres. Divers access the water directly from the shore. Conditions are generally mild, though water temperatures fluctuate significantly throughout the year, ranging from 4C in the winter months to 19C in August. Facilities available at the site include parking, toilets, and showers for diver convenience.