Sponge Forest is a deep-water reef located off Cape Ann, requiring boat access. The site sits at depths between 20 and 33 metres, with an average depth of 32 metres. Divers encounter strong currents and visibility reaching 30 metres. Water temperatures are cold, ranging from 5 to 16 degrees Celsius, with temperatures at depth rarely exceeding 10 degrees Celsius. Due to the depth, cold conditions, and potential for strong currents, this site is suitable only for advanced divers. Hazards include boat traffic, entanglement risks, jellyfish, and sharks. Divers should use a drysuit and maintain strict buoyancy control while monitoring depth and current conditions closely.

The Josephine Marie is a deep wreck located 9656 metres off the coast of Cape Ann. Resting at a constant depth of 32 metres, this site is strictly for advanced divers. Conditions are challenging, featuring strong currents and visibility ranging from 9 to 12 metres. Water temperatures remain cold, rarely exceeding 10 degrees Celsius at depth, necessitating the use of a drysuit. Divers must manage significant entanglement risks within the wreck structure and remain vigilant regarding heavy local boat traffic. A surface marker buoy is essential for safety, and descents should be timed to coincide with slack water to mitigate the impact of the currents.

The Pinthas is a shallow reef site located in Cape Ann, United States, with depths ranging from 4 to 7 metres. This site is accessed by boat and features a moderate current, requiring divers to plan their movement carefully to drift back toward the exit point. Visibility is consistently around 5 metres, creating an intimate environment suitable for observant diving. The reef supports a variety of marine life typical of the region, including various reef fish and invertebrates. Given the shallow depth and manageable conditions, the site is suitable for newly certified divers and those looking to build confidence, with year-round diving opportunities available.

Brant Rock in Cape Ann provides shore-access diving along a reef and wall structure situated at depths of 9 to 12 metres. The site features a drift element where moderate currents move divers along the reef face. Visibility typically ranges from 5 to 10 metres. Due to the surf and shore break, entry requires caution, and divers should be aware of potential rip currents. Water temperatures fluctuate between 4 and 18 degrees Celsius, necessitating thick exposure suits, hoods, gloves, and boots. Facilities including parking and toilets are available on site to assist with gearing up and warming down.

Saturday Night Ledge is a complex marine site located 4828 metres off the coast of Cape Ann. This advanced dive site features a combination of reef, wall, and canyon topography. Divers can expect depths ranging from 18 to 44 metres, with an average depth of 30 metres. Access is strictly by boat. Conditions are challenging, characterised by strong currents and visibility typically between 5 and 15 metres. Water temperatures are cold, fluctuating between 4C and 13C throughout the year. Due to the depth, current, and potential for low visibility, this site is suitable only for experienced divers. Hazards include boat traffic, entanglement risks, and cold water exposure.

Burnham Rocks is a marine dive site located off Cape Ann, featuring a topography of reefs, walls, and canyons. This site is suitable for advanced divers due to its depth range of 20 to 42 metres and the requirement for boat access. Divers should be aware that the site is deep. Conditions include mild currents and visibility typically ranging between 5 and 10 metres. Water temperatures are cold, fluctuating between 3C and 14C throughout the year. As a boat-only site, it offers a challenging environment for experienced divers looking to explore the varied underwater structures of the Cape Ann region.

The Crane is a wreck dive located off Cape Ann, United States, situated at depths between 43 and 48 metres. This site is strictly for advanced technical divers due to the significant depth, moderate currents, and cold water temperatures ranging from 4 to 14 degrees Celsius. Visibility is variable and can drop to near zero, necessitating the use of primary and backup torches. Divers must be prepared for entanglement risks within the wreck structure. Access is by boat only. Given the challenging conditions and depth, divers should plan bottom times conservatively and ensure appropriate thermal protection, such as a drysuit, is utilised for the duration of the dive.

Jeffreys Ledge is a deep-water reef located 13 kilometres off Cape Ann, offering technical diving across a significant depth range of 33 to 91 metres. The site is characterised by strong currents and consistent visibility of 30 metres. Due to water temperatures ranging from 3 to 10 degrees Celsius, a drysuit with full thermal protection is essential for all divers. Access is strictly by boat, and the site is suited only for advanced divers due to the depth, potential for entanglement, and rapidly changing current conditions. Divers should coordinate closely with charter operators to time slack water windows accurately, as currents can build quickly.