SMS Cormoran is a German merchant raider scuttled in 1917, resting in Apra Harbor at depths between 12 and 40 metres. The wreck lies alongside the Tokai Maru, with both vessels accessible to divers at a depth of approximately 29 metres. This site is reserved for advanced divers due to the overhead environment, potential for nitrogen narcosis, and deep water. Visibility ranges from 6 to 37 metres, and moderate currents are common. Access is strictly by boat, and divers must remain vigilant regarding boat traffic in the harbour. Water temperatures remain consistent throughout the year, typically between 28 and 30 degrees Celsius.

The Tokai Maru is a WWII Japanese freighter resting on its port side in Apra Harbor. Sunk on 27 August 1943, the wreck lies at depths between 15 and 40 metres, with an average depth of 25 metres. It is notable for resting against the SMS Cormoran, allowing divers to touch both a WWI and WWII wreck simultaneously. Access is by boat only, located 1500 metres from shore. Divers encounter common species including pufferfish, wrasses, cardinalfish, soldierfish, and hermit crabs, alongside less frequent sightings of butterflyfish, triggerfish, and various sea stars. Due to the depth and overhead environment, this site is strictly for advanced divers.

The Kitsugawa Maru is a freighter sunk in July 1944 that sits upright in Apra Harbor. The wreck remains approximately 80 percent intact, featuring a large bow gun and masts that begin at 18 metres. Divers can expect depths ranging from 15 to 42 metres, with an average of 27 metres. This boat-only dive is suited for advanced divers due to the depth and overhead environment. Visibility varies between 4 and 20 metres, and moderate currents are common. Marine life frequently recorded at the site includes pufferfish and wrasses, alongside less common species such as Pacific doublesaddle butterflyfish, threadfin butterflyfish, flagtail triggerfish, and blackback anemonefish.

Apra Harbor Reef offers a varied underwater landscape for intermediate divers, with depths ranging from 2 to 30 metres and an average of 15 metres. This shore-entry site features a reef structure that slopes from the shallows into deeper water. Divers should be prepared for moderate currents, which can strengthen unexpectedly; planning the dive around slack tide is recommended. Visibility typically fluctuates between 5 and 15 metres. Water temperatures remain consistent throughout the year, ranging from 28 to 30 degrees Celsius. Due to the potential for strong currents, divers must monitor their position relative to the reef throughout the 45-minute dive duration.

Western Shoals is a sloping reef located within Apra Harbor, Guam. This site is suitable for beginners and offers a depth range of 3 to 27 metres, with an average depth of 10 metres. Divers typically spend 45 minutes exploring the reef, which features healthy coral growth. Access to the site is by boat only. Conditions are generally mild, with visibility ranging from 9 to 30 metres and water temperatures between 28C and 30C throughout the year. Due to the location, divers should remain aware of boat traffic in the area.

Harley Reef in Apra Harbor, Guam, is a unique dive site featuring both reef topography and a historical wreck. The site is notable for a 1944/45 WLA Flathead Harley-Davidson motorcycle resting at a depth of approximately 3 metres. Beyond the wreck, the site consists of a sloping wall covered in coral. Divers can expect depths ranging from 3 to 37 metres, with an average depth of 15 metres. Conditions are generally mild, though visibility fluctuates between 2 and 27 metres. Access to this site requires a boat. Due to the presence of sharp coral, divers should exercise caution when navigating the area.

Amphitheater in Apra Harbor, Guam, is a reef and wall site defined by its natural curvature and significant drop-off. Divers can explore depths ranging from 9 to 40 metres. The site features deep water corals along the wall structure. Visibility is generally good, typically ranging from 18 to 61 metres. Access is by boat only, and the site is suited for advanced divers due to the potential for moderate currents, deep water, and surf conditions. Species recorded around this area include various wrasses, pufferfish, butterflyfish, lionfish, and trevally, though these are not confirmed sightings at this specific location.

Val Bomber is a Japanese aircraft wreck located in Apra Harbor, resting against the side of a reef. The wreck lies at a depth of 26 metres, with the site ranging from 9 to 30 metres. In addition to the aircraft, divers can explore numerous barges situated in the shallower sections of the site. Access is by boat only, and the site is suited for advanced divers due to the depth. Conditions typically feature mild currents and visibility ranging from 9 to 15 metres. Water temperatures remain consistent throughout the year, between 28 and 30 degrees Celsius.