The Arch at Isla del Caño is defined by an underwater rock formation that creates a natural tunnel. The arch itself sits at a depth of 10 to 12 metres, while surrounding pinnacles rise closer to the surface. Divers typically explore the site at depths between 8 and 18 metres, with an average depth of 15 metres. Access is by boat only, as the site is located 16 kilometres from shore. Conditions vary, with visibility ranging from 10 to 25 metres and mild currents. The site is suitable for intermediate divers and offers a 4 out of 5 rating for snorkelling.

El Jardín is a shallow reef site located at Isla del Caño, known for its high concentration of hard corals including Pocillopora and Porites. The site ranges from 5 to 10 metres in depth, with an average of 8 metres, making it suitable for both divers and snorkellers. Access is by boat only, and the site is subject to moderate currents and occasional surf. Visibility varies between 8 and 25 metres. Divers should be aware of sharp coral and potential thermoclines at depths of 15 to 20 metres, where temperatures drop suddenly. Water temperatures typically range from 28 to 30 degrees Celsius.

Isla del Caño features a combination of natural hard coral reefs and artificial reef structures located 19 kilometres from the coast. Divers typically experience depths between 5 and 35 metres, with an average of 18 metres. The site is accessible only by boat and is suited for intermediate divers due to moderate currents and potential thermoclines that can drop temperatures to 16°C. Marine life is diverse, with frequent sightings of whitetip reef sharks, king angelfish, redlip parrotfish, triggerfish, guineafowl puffer, wrasses, and razor surgeonfish. Rarer encounters include harlequin shrimp and various moray eel species. The site also offers night diving opportunities and is well-regarded for snorkelling.

El Ancla is a reef and artificial reef site located at Isla del Caño. The topography features large volcanic rock mounds interspersed with scattered coral heads. The site is named for a 19th-century anchor resting on the seabed, which can be visible from the surface when visibility is high. Depths range from 5 to 17 metres, with an average of 10 metres. Access is by boat only, and the site is suitable for beginners. Divers should be aware of potential strong currents. Visibility typically ranges between 15 and 30 metres, and water temperatures remain warm throughout the year, generally between 27 and 29 degrees Celsius.

The Wreck is a reef site located off Isla del Caño, Costa Rica, accessible only by boat. Despite its name, there is no shipwreck at this location. Divers can expect depths ranging from 13 to 21 metres, with an average depth of 17 metres. Conditions include moderate currents and visibility between 10 and 27 metres. Water temperatures remain consistent throughout the year, typically between 27 and 28 degrees Celsius. The site is suitable for beginners and offers a typical dive duration of 45 minutes. Facilities at the site include toilets.

Ranger Station Beach, or Playa Estación, is the primary shore entry point on Isla del Caño, situated directly in front of the SINAC ranger station. This reef site features rocky outcrops at both ends of the beach. Divers and snorkellers can expect depths ranging from 2 to 8 metres, with an average depth of 5 metres. Conditions vary, with visibility typically between 8 and 30 metres and moderate currents. Water temperatures are generally warm, between 28 and 30 degrees Celsius, though cooler thermoclines may occur. Hazards include jellyfish, sharp coral, and surf. The site is suitable for beginners and offers a typical dive duration of 45 minutes.

The Garden is a reef site located at Isla del Caño, Costa Rica, accessible only by boat. The reef topography extends from 5 to 33 metres, allowing beginners to remain in shallower sections while more experienced divers explore the deeper areas. Conditions at the site vary, with visibility ranging from 3 to 30 metres and currents generally remaining mild. Water temperatures are consistent throughout the year, typically between 25 and 27 degrees Celsius. Divers and snorkellers should remain alert for jellyfish, sharp coral, and potential surges. The site is rated 4 out of 5 and offers basic facilities including toilets.

Campanario is a reef dive located off Isla del Caño, Costa Rica, suitable for beginner divers. The site features a reef structure at depths ranging from 13 to 20 metres, with an average depth of 16 metres. Divers can expect mild currents and visibility between 10 and 25 metres. Water temperatures remain consistent throughout the year, typically between 27 and 28 degrees Celsius. Access to this site is by boat only, and night diving is permitted. Divers should remain vigilant regarding surface boat traffic and use a surface marker buoy before ascending to ensure safety.