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.

Brittany & Normandy Wreck #1 is a deep wreck dive located 30 kilometres offshore from Arromanches-les-Bains. The structure lies at depths between 20 and 40 metres, with an average depth of 30 metres. Divers should expect moderate currents and visibility ranging from 3 to 10 metres, making a torch and navigation skills essential. The site is accessible only by boat. Water temperatures fluctuate between 9°C and 19°C, requiring appropriate thermal protection. Hazards include potential entanglement within the wreckage, sharp surfaces, and local boat traffic. The structure supports a variety of marine life typical of the region, including reef fish and invertebrates that have colonised the wreck over time.