The Arch at Isla del Caño is a marine dive site defined by its distinctive underwater rock formations, including arches and swim-throughs. The site features a mix of reef and wall topography, with depths ranging from 9 to 17 metres and an average depth of 13 metres. Access is by boat only, located 16 kilometres from the shore. Divers can expect mild currents and visibility between 15 and 30 metres. Water temperatures typically range from 27 to 29 degrees Celsius, though thermoclines may cause temperatures to drop significantly at depth. The site is suitable for beginners and offers a typical dive duration of 60 minutes.

The Lighthouse at Isla del Caño offers a combination of reef and wall diving. Divers can expect depths ranging from 12 to 30 metres, with an average depth of 20 metres. Access to this site is by boat only, located 16 kilometres from the shore. Conditions include moderate currents and visibility between 15 and 30 metres. Water temperatures typically range from 25 to 27C, though divers should be prepared for potential cooler thermoclines. Due to the depth, currents, and potential for reduced visibility, this site is suited for intermediate divers. Facilities at the site include toilets.

Jardín is a reef dive site located at Isla del Caño, Costa Rica, accessible only by boat. The site features a shallow average depth of 7 metres, with a range between 6 and 8 metres. Divers can expect mild currents and visibility typically ranging from 10 to 30 metres. Water temperatures remain warm throughout the year, fluctuating between 28C and 30C. Due to the nature of the environment, divers should be aware of potential hazards including boat traffic, sharp coral, surf, and surge. The site is suitable for beginners and guided tours are available, with equipment rental and air fills provided locally.

Bajo del Diablo is a massive underwater mountain located 16 kilometres from shore near Isla del Caño. The site features a reef, pinnacle, and wall topography, with the uppermost pinnacle rising to between 5 and 6 metres of the surface. Divers and snorkellers can expect depths ranging from 5 to 35 metres. Conditions vary, with moderate currents, surge, and visibility typically between 15 and 30 metres. Due to the potential for strong currents and surge, this site is suited for advanced divers. Boat access is required for all visits. Species recorded around this area include whitetip reef sharks, king angelfish, various moray eels, bluefin trevally, pufferfish, wrasses, triggerfish, parrotfish, and surgeonfish.

The Cave at Isla del Caño offers a combination of open reef and cave formations at depths between 18 and 25 metres. Divers can expect consistent visibility of 30 metres. The site is suited for intermediate divers, requiring boat access due to its distance from shore. Marine life frequently encountered includes whitetip reef sharks, King Angelfish, and various triggerfish, groupers, and wrasses. Within the cave crevices, divers may spot snowflake, panamic green, and yellow-edged morays. While currents are typically mild, they can strengthen, and divers should remain aware of their position. Always conduct a thorough site assessment from the boat before entry, as surge and swell may occur.

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.

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.

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.