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.

Anders Martin is a wreck dive located off Hesselø, Denmark, resting at depths between 16 and 23 metres. Divers can expect visibility ranging from 10 to 15 metres, providing a clear view of the structure. The site is accessible only by boat and is suited for intermediate divers due to the need for active current management. Water temperatures are cold, fluctuating between 4 and 14 degrees Celsius, necessitating appropriate exposure protection. The habitat supports a variety of temperate marine life, including various fish and invertebrates typical of the region. Divers should monitor their depth closely throughout the 45-minute average dive time to manage nitrogen levels.

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.

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.

Klintebjerget is a shore dive located off the coast of Hesselø, Denmark, featuring a combination of natural and artificial reef structures. Divers enter from the beach and navigate towards the reef, which lies approximately 500 metres offshore. The site is suitable for beginners, with depths ranging from 5 to 8 metres and an average depth of 6 metres. Conditions vary, with visibility typically between 3 and 10 metres and mild currents. Divers should be aware of boat traffic in the area and use a surface marker buoy at all times. Parking is available near the entry point.

Tisvildeleje Strand features a stone reef located approximately 100 metres from the shore. Divers typically enter from the beach near the parking area, navigating a sandy bottom before reaching the reef structure. The site reaches depths between 3 and 9 metres, with an average depth of 6 metres. Conditions include moderate currents and visibility ranging from 5 to 10 metres. The water temperature fluctuates significantly throughout the year, ranging from 4C to 18C. Divers should remain aware of boat traffic in the area. Facilities at the site include parking, toilets, and a cafe. Night diving is permitted, and the site is suitable for beginners.

The Libra M/S is a shipwreck dive site located off the coast of Hesselø, Denmark. The wreck lies at a consistent depth of approximately 10 metres. Conditions at this site vary throughout the year, with water temperatures ranging from 4C in the winter months to 18C in August. The site is suitable for divers interested in wreck exploration within a temperate marine environment. The habitat supports a variety of temperate marine life, including various reef fish and invertebrates typical of the region. Divers should be prepared for variable visibility and conditions common to the Danish coastline.

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.