Manado Concrete Reef is an artificial structure located off Manado Tua, Indonesia, offering a mix of artificial, natural reef, and muck environments. The site sits at depths between 25 and 35 metres, with an average of 30 metres, making it suitable for intermediate divers with strong buoyancy control. Visibility typically ranges from 15 to 30 metres. Divers may encounter moderate currents that can intensify with tidal shifts, requiring careful planning around slack water. Entry is possible from both shore and boat. Due to active surface boat traffic, the use of a DSMB is recommended during ascent. Night diving is available at this location.

City Extra is a mixed-habitat dive site located near Manado Tua, Indonesia, featuring a combination of muck, reef, and seagrass environments. Suitable for beginner divers, the site ranges from 5 to 20 metres in depth with an average of 15 metres. Visibility typically spans 10 to 25 metres, and water temperatures remain consistent between 29 and 30C. Access is by boat only. Divers should be aware of moderate currents and potential surge or swell, which can shift positions in shallow areas. Night diving is available, offering a different experience of the terrain. A typical dive lasts 45 minutes.

Murex House Reef is a versatile shore entry site featuring a coral slope that transitions into a sandy bottom. The upper section, reaching depths of 12 metres, contains table corals. Below this, the sandy slope features patches of coral and artificial reef balls colonised by sponges and corals. Underwater trails facilitate navigation across the site, which is suitable for beginners. Divers can expect depths between 5 and 25 metres with an average of 10 metres. Conditions include mild currents and visibility ranging from 10 to 30 metres. The site is accessible for both diving and snorkelling, with night diving also available.

Bdc House Reef is a shallow shore dive located at Manado Tua, Indonesia. The site maintains a consistent depth of 6 metres, making it suitable for beginner divers. Conditions are generally calm with mild currents and water temperatures ranging between 29C and 30C throughout the year. Divers should be aware of the presence of stonefish in the area. The site is supported by a dive shop offering equipment rental, air fills, and rinse facilities, alongside amenities including showers, toilets, and a cafe. Access is straightforward from the shore, providing a convenient environment for those looking for a shallow, relaxed dive experience.

Malalayang Beach is a popular shore-access site near Manado, featuring a mix of reef, muck, and artificial reef habitats on volcanic black sand. The site is well-suited for beginners, with depths ranging from 1 to 10 metres and an average depth of 5 metres. Conditions are generally mild, though visibility varies between 5 and 15 metres. Divers and snorkellers should be aware of boat traffic and sharp coral in the area. Facilities include parking, toilets, showers, rinse stations, equipment rental, and a dive shop. Species recorded around this area include ghost pipefish, frogfish, nudibranchs, moray eels, lionfish, and various reef fish.

Bigfish housereef in Manado Tua offers a diverse underwater environment combining natural reef, muck, and artificial reef structures. Suitable for beginners, the site features an average depth of 15 metres, ranging between 10 and 20 metres. Visibility typically spans 10 to 30 metres, with water temperatures consistently between 29 and 30 degrees Celsius. While currents are generally mild, they can strengthen without warning, so monitoring surface conditions before entry is recommended. The site is accessible via shore and supports night diving. On-site facilities include parking, toilets, showers, a rinse station, equipment rental, and air fills.

Polytechnic Housereef in Manado Tua offers a diverse underwater environment combining natural reef, muck, and artificial structures. This shore-entry site is suitable for beginners, with depths ranging from 6 to 16 metres and an average of 12 metres. Visibility typically spans 10 to 30 metres. Divers should be aware that currents can be moderate to strong and may shift unexpectedly; planning dives around slack or incoming tides is recommended. The site is also accessible for night diving. Facilities on-site include parking, rinse stations, air fills, and gear storage. Species recorded around this area include Napoleon Wrasse, Giant Frogfish, Ornate Ghostpipefish, Indian Lionfish, and various nudibranchs.

Jayamahe is a reef site located off Manado Tua, Indonesia, offering a varied topography that suits intermediate divers. The reef structure extends from 10 to 40 metres, allowing for both shallow exploration and deeper, more technical dives. Access is exclusively by boat. Divers can expect mild currents and visibility ranging between 10 and 30 metres. Water temperatures remain consistent, typically between 28 and 29 degrees Celsius throughout the year. Due to the nature of the reef, booking a guided tour through a local dive shop is recommended to navigate the most active sections of the site effectively.