Critter Circus in Manado Tua, Indonesia, offers a diverse underwater environment featuring muck, reef, and artificial reef topography. Divers can explore depths ranging from 3 to 40 metres. The site is accessible only by boat and is suited for intermediate divers. Conditions are generally stable with mild currents and visibility ranging between 10 and 30 metres. Water temperatures remain consistent throughout the year, typically between 27 and 30 degrees Celsius. The site supports night diving and provides facilities including air fills, equipment rental, and guided tours. Divers should remain aware of boat traffic and local marine life during their 60-minute dives.

Tasik Ria Pier is a shore dive in Manado Tua that features a combination of natural reef and artificial reef structures. Divers can explore depths between 8 and 20 metres, with an average of 15 metres. The site is suitable for beginners, offering mild currents and visibility ranging from 10 to 25 metres. Marine life includes common sightings of spotfin lionfish, Indian lionfish, pufferfish, wrasses, and striped eel catfish. Less frequent encounters include robust ghost pipefish, giant frogfish, ornate ghostpipefish, broadclub cuttlefish, banded pipefish, ribbon eel, harlequin sweetlips, ocellaris anemonefish, and white-spotted puffer. The site is also accessible for night diving. Divers should be cautious of sharp coral and potential entanglement hazards near the pier.

Whale bones is a marine reef and wall site located off Manado Tua, Indonesia. This drift dive site features a vertical wall topography that descends from 5 metres to 40 metres, with an average depth of 20 metres. Access is by boat only, as the site is situated 5000 metres from the shore. Divers should expect moderate currents and visibility ranging between 20 and 35 metres. The water temperature remains consistent, typically between 27 and 30 degrees Celsius. Due to the depth and current conditions, this site is suited for intermediate divers. Night diving is permitted at this location.

Lumbalumba House Reef, located at Manado Tua, offers a diverse underwater environment featuring a combination of coral reef, artificial structures, seagrass beds, and sandy muck areas. Suitable for beginners, the site ranges from 2 to 18 metres in depth with an average of 14 metres. Divers and snorkellers can expect mild currents and visibility between 10 and 35 metres. Water temperatures remain warm at 28 to 30C, though occasional cooler thermoclines occur from October to December. Entry is via the shore, and the site supports night diving. Hazards include boat traffic, low visibility, and sharp coral. Species recorded around this area include Spotfin Lionfish, Broadclub Cuttlefish, and Painted Spiny Lobster.

Wallet is a reef and wall dive site located at Manado Tua, Indonesia. The site is suitable for beginners, with depths typically ranging between 15 and 20 metres. Divers access the site by boat, and conditions are generally characterised by mild currents and visibility of 5 to 10 metres. Water temperatures remain warm, between 28 and 30 degrees Celsius. When diving, be aware of boat traffic on the surface and avoid contact with the reef, as the coral and rocks are sharp. Currents can strengthen unexpectedly, so it is recommended to stay close to your guide and group throughout the dive.

Tanjung Papaya in Manado Tua offers a shallow dive experience ranging from 3 to 6 metres. This site features a combination of natural reef, muck terrain, and an artificial reef structure constructed from old motorcycles. Divers can explore a field of Euphyllia torch corals across the site. Access is via a shore entry, making it suitable for beginners. Conditions are generally mild with visibility between 5 and 10 metres and water temperatures consistently between 29 and 30C. Night diving is permitted at this location. Hazards include potential entanglement, sharp coral, and the presence of stonefish. Typical dives last approximately 45 minutes.

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.

Poopoh is a shore-accessible dive site in Manado Tua that offers a diverse underwater environment featuring muck, seagrass, and reef habitats. Suitable for beginners, the site reaches depths between 10 and 25 metres with an average of 15 metres. Divers should be aware of moderate currents and visibility that fluctuates between 5 and 20 metres. Water temperatures remain warm, ranging from 28 to 30C throughout the year. Night diving is available and recommended to observe the reef after dark. Due to the presence of stonefish in the shallows and potential entanglement hazards from debris, divers should shuffle their feet during entry and avoid unnecessary contact with the bottom.