Cannons is a marine dive site located off Porto Santo, Madeira, featuring a combination of a cave system and an artificial reef. The site sits at depths between 15 and 21 metres, with an average depth of 20 metres. Visibility ranges from 15 to 40 metres, and the area is subject to mild currents. Access is by boat only, and the site is suitable for intermediate divers due to the overhead environment within the cave. Night diving is available. Divers should exercise caution regarding the overhead environment and potential stonefish presence on the substrate.

Baixa do Chines is a deep reef and wall dive located off Porto Santo, Madeira. The site features a significant wall structure with depths ranging from 40 to 56 metres, averaging 45 metres. Due to the depth profile, this site is strictly for advanced divers with experience in deep diving and decompression procedures. Visibility is consistently around 30 metres, providing clear views of the topography. While currents are generally mild, the depth presents risks including nitrogen narcosis and decompression requirements. Boat access is required for all dives, and night diving is available, though conditions should be confirmed with a charter operator prior to departure.

Baixa do Alex is a reef site located 500 metres off the coast of Porto Santo, Madeira. Reaching depths of 24 to 26 metres, the site features mild currents and visibility ranging from 20 to 30 metres. Access is by boat only. The topography includes cave and swim-through sections, which require careful navigation and constant awareness of open water access points. Due to the potential for difficult orientation, divers should follow their guide closely and note landmarks during the briefing. Boat traffic is a hazard, so divers must deploy a surface marker buoy at the start of their ascent. Species recorded around this area include dusky grouper, great barracuda, and common octopus.

Baixa das Bicudas is a boat-accessible dive site located off the coast of Porto Santo, Madeira. The site features depths ranging from 30 to 35 metres, making it suitable for experienced divers. Conditions vary, with visibility typically between 10 and 30 metres and mild currents. Water temperatures fluctuate throughout the year, ranging from 18C in March to 23C between August and October. While specific sightings at this exact location are not confirmed, species recorded around this area include dusky grouper, great barracuda, common octopus, common stingray, trumpetfish, pufferfish, European parrotfish, cleaner shrimp, Turkish wrasse, arrow crab, black moray, kingfish, slipper lobster, and banded coral shrimp.

Molhe de Fora in Porto Santo, Madeira, features a combination of artificial reef structures and natural reef terrain. The site maintains a consistent depth between 9 and 11 metres, making it suitable for beginner divers. Divers can access the area from the shore or by boat. Conditions are generally relaxed with mild currents and visibility ranging from 10 to 30 metres. The site is also available for night diving. On-site facilities include changing rooms, showers, and a rinse station to assist with gear maintenance. Divers should remain vigilant regarding boat traffic and potential entanglement risks while monitoring surface conditions.

The Cordeca is an artificial reef located off Porto Santo, resting on a sandy seabed at depths between 15 and 28 metres. This wreck site is accessible only by boat and offers visibility ranging from 20 to 40 metres. The structure is suitable for intermediate divers, with opportunities for wreck penetration for those trained in overhead environments. Divers should be aware of mild currents and the potential presence of jellyfish. The site is also available for night diving. Local facilities provide air fills and equipment rental to support your visit to this submerged structure.

The Madeirense is a deliberately sunk wreck resting on a sandy bottom at depths of 30 to 35 metres off Porto Santo. Functioning as an artificial reef, the structure is accessible only by boat, located 1600 metres from the shore. Divers typically experience mild currents and visibility ranging from 10 to 30 metres. Due to the depth, this site is suited for intermediate divers who must manage bottom time carefully. Water temperatures fluctuate between 18C and 23C, with winter lows reaching 16C. Species recorded around this area include dusky grouper, great barracuda, common octopus, arrow crab, black moray, and various wrasse and parrotfish.

Pedra do Ginja is a reef located off Porto Santo, Madeira, offering depths between 13 and 21 metres with an average of 17 metres. This site is accessible by boat and is suitable for beginner divers. Visibility is notable, ranging from 15 to 40 metres. While currents are typically mild, they can strengthen, and divers should maintain situational awareness regarding surface boat traffic during ascents. Water temperatures fluctuate between 18 and 24 degrees Celsius throughout the year. Local dive shops on Porto Santo provide equipment hire and manage daily boat trips to the site, where they monitor changing conditions.