Canyon Reef in Manuel Antonio features distinct canyon formations running along the back of the island. This site is suitable for intermediate divers, offering depths ranging from 5 to 30 metres with an average of 18 metres. Divers can expect mild currents and visibility between 15 and 30 metres. Water temperatures typically range from 25 to 27 degrees Celsius, though cooler currents can occasionally drop temperatures to 19 degrees Celsius between December and March. Access to this site requires a boat, and divers should be aware of potential surge conditions. A typical dive at this location lasts approximately 50 minutes.

South Point in Manuel Antonio features a diverse underwater topography consisting of a drop-off wall, a canyon, and reef structures. The site reaches depths between 5 and 30 metres, with an average depth of 18 metres. Access is by boat, located 3000 metres from the shore. Divers should be prepared for moderate currents and surge, with visibility ranging from 5 to 25 metres. Water temperatures typically sit between 25 and 27C, though cold thermoclines reaching 16C are frequently encountered. This site is suitable for beginners and offers a typical dive duration of 45 minutes.

El Toro is a pinnacle and reef site located 5000 metres off the coast of Manuel Antonio. The topography consists of rock and reef formations interspersed with sand patches. Divers can expect depths ranging from 5 to 35 metres, with an average depth of 18 metres. This site is suited for intermediate divers and requires boat access. Conditions vary significantly, with visibility between 6 and 30 metres and moderate currents. Divers should be prepared for surge and frequent, intense thermoclines that can cause temperatures to drop to 16 degrees Celsius, despite average water temperatures of 25 to 27 degrees Celsius.

El Aquario is a reef site located 10 kilometres offshore from Manuel Antonio. The topography consists of a central sand patch surrounded by rock and reef pinnacles featuring hard coral formations. Divers can expect depths ranging from 8 to 25 metres, with an average depth of 18 metres. Conditions include mild currents and visibility between 5 and 15 metres. Water temperatures remain consistent, typically between 25 and 28 degrees Celsius. Access is by boat only, and the site is suitable for beginners. Hazards include jellyfish, lionfish, sharp coral, and stonefish. Species recorded around this area include wrasses, butterflyfish, rock cod, triggerfish, pufferfish, and spiny lobsters.

Las Gemelas consists of two prominent volcanic rock islets located offshore from Manuel Antonio. These formations function as a natural reef, providing a habitat for various marine life. The site is suitable for beginners and is accessed via boat. Depths range from 10 to 18 metres, with visibility varying between 8 and 30 metres. Conditions generally feature mild currents, though divers and snorkellers should be aware of potential surge, sharp coral, and sea urchins. Water temperatures remain warm throughout the year, typically between 28 and 30 degrees Celsius. Guided tours and equipment rentals are available for those visiting the area.

Pelican Island, or Isla Mogote, is a reef site located 5000 metres off the coast of Manuel Antonio National Park. This boat-accessible location offers depths ranging from 10 to 18 metres, with an average depth of 14 metres. Divers and snorkellers can expect variable visibility between 5 and 25 metres and moderate currents. Water temperatures remain consistent throughout the year, typically between 26 and 28 degrees Celsius. The site is suitable for beginners, though visitors should be aware of hazards including sea urchins and sharp coral. As a marine environment, the area supports a variety of reef habitats.

Playa Playitas is a rocky reef site located at the northern end of Espadilla beach in Manuel Antonio. The site is shallow, with depths ranging from 1 to 5 metres and an average of 3 metres. Divers and snorkellers should be aware of variable conditions, including moderate to strong currents, surf, and potential rip currents. The rocky outcrops require caution due to the presence of sharp coral and sea urchins. Given the environmental conditions, this site is best suited for intermediate divers. Visibility is limited, typically ranging between 2 and 8 metres. Typical dives last approximately 45 minutes, with shore access available during calm weather.

Playa Biesanz is a secluded cove located near Manuel Antonio, Costa Rica, featuring a reef environment suitable for beginners. Snorkellers typically explore the rocky southern edge of the bay, where depths range from 2 to 10 metres with an average of 5 metres. The site is accessed from the shore and generally experiences mild currents. Visibility varies between 5 and 20 metres, and water temperatures remain consistently warm throughout the year. Facilities available at the site include parking, toilets, showers, a rinse station, equipment rental, and a cafe. Divers and snorkellers should be aware of potential hazards including low visibility and sharp coral.