Mulberry Harbour in Arromanches-les-Bains consists of massive concrete Phoenix caissons submerged as an artificial reef. Located 100 metres from the shore, the site offers a unique opportunity to explore historical WWII structures. Divers and snorkellers can access the site directly from the beach. Conditions vary, with depths ranging from 9 to 18 metres and strong currents present. Due to the nature of the submerged wreckage, hazards include entanglement risks, low visibility, and cold water temperatures ranging from 9C to 19C. The site is best suited for intermediate divers, though the shallow sections are accessible for snorkelling.

The SS Empire Roseberry is a shipwreck located 5000 metres off the coast of Arromanches-les-Bains, France. This site is accessible only by boat and is suited for intermediate divers. The wreck lies at depths ranging from 2 to 10 metres, with an average depth of 10 metres. Divers should be aware of the risk of entanglement when exploring the structure. Conditions at the site vary, with visibility typically between 5 and 15 metres and moderate currents present. Water temperatures fluctuate throughout the year, ranging from 9C in the winter months to 18C during the summer. A typical dive at this location lasts approximately 40 minutes.

Le Bout du Monde is located at the northern tip of the main beach in Le Havre, where the promenade meets the cliffs. This site features a combination of natural reef and artificial reef structures, including rocky groynes and submerged boulders that offer shelter. It is suitable for beginners, with depths ranging from 1 to 5 metres. Access is via the shore, and conditions include mild currents and visibility between 2 and 8 metres. Water temperatures fluctuate between 9C and 19C throughout the year. Divers and snorkellers should be aware of potential hazards including entanglement, low visibility, and surf. Facilities available on-site include parking, toilets, showers, and a cafe.

Bassin du Commerce in Le Havre offers a shallow marine dive experience suitable for beginners. Divers can expect depths between 4 and 5 metres with a consistent visibility of 5 metres. Access to the water is via the shore. Water temperatures fluctuate throughout the year, ranging from a low of 8C in February to a high of 20C in August. As a sheltered harbour basin, it provides a controlled environment for those starting their diving journey or looking for a straightforward, shallow-water dive in the region.

Bassin du Commerce is an enclosed seawater basin located in the heart of Le Havre, France. This urban site offers a protected environment suitable for beginner snorkellers. The water temperature fluctuates throughout the year, ranging from 8C in February to 20C in August. Visibility is typically limited to 2 to 3 metres. Access to the water is via the shore. As an enclosed basin, it provides a controlled setting for those practising basic snorkelling skills in a marine environment.