Dive Site: Devil's Rock

About Devil's Rock

Devil's Rock is a prominent dive site located in Costa Rica's Caño Island Biological Reserve, positioned to the northwest as an extension of the larger Bajo del Diablo platform. This exceptional location is celebrated for its rich marine biodiversity, attracting divers with its vibrant underwater ecosystem and dynamic pelagic encounters. The site's topography, an extension of the varied rock formations found at Bajo del Diablo, creates an intricate environment suitable for a wide array of marine life. Dive depths at Devil's Rock typically range from 18 to 35 meters (60 to 115 feet). While it shares characteristics with Bajo del Diablo, it maintains its own distinct appeal, particularly for those seeking diverse fish populations alongside larger marine species. The site's position means it is subject to oceanic conditions, contributing to its reputation as a dynamic dive location. Marine life sightings are a major draw, with tropical fish in abundance. Divers frequently encounter whitetip sharks, nurse sharks, moray eels, and various rays, including mobula and manta rays. Game fish such as tuna and wahoo also patrol these waters, adding to the excitement. The overall experience at Devil's Rock is one of immersion in a thriving marine habitat, offering spectacular underwater scenery and exciting wildlife interactions. Access to Devil's Rock is primarily by boat from mainland departure points like Drake Bay or Sierpe, often incorporated into day trips or liveaboard itineraries. Given the potential for strong currents, it is best suited for experienced divers comfortable with challenging conditions, ensuring a rewarding exploration of this captivating underwater world.

Dive site facts: Devil's Rock

Depth

18–35 m

Current

Moderate to strong

Visibility

15–30 m

Water temperature

23–30°C

Entry

Boat

Level

Advanced recommended

Dive type

Pelagic, reef, pinnacles

Region / port

Caño Island, Osa Peninsula

Coordinates

7.8574° N, 86.1992° W

Conditions & Currents

Currents at Devil's Rock can range from moderate to strong, particularly due to its exposure as an extension of the Bajo del Diablo platform, which experiences significant oceanic influences. Divers should be prepared for varying current strengths, as these often dictate the dive trajectory and are a key factor in attracting large pelagic species. Entry and exit procedures may require careful timing with the boat or a negative entry technique to manage conditions effectively. Visibility at the site generally ranges from 15 to 30 meters, though it can fluctuate with plankton blooms, which, while reducing clarity, often coincide with increased large animal activity. Thermoclines are possible, potentially bringing cooler water, so a thicker wetsuit may be advisable. Divers should have experience with currents to safely and fully enjoy this site.

Marine life & sighting chances

Whitetip reef shark

common

Nurse shark

occasional

Moray eel

common

Mobula ray

occasional

Manta ray

Late December to early March · occasional

Tuna

occasional

Wahoo

occasional

Barracuda

common

Tropical fish

common

Octopus

occasional

Sea turtle

common

Whale shark

June to August · occasional

Dive profile & how the dive runs

Diving at Devil's Rock typically begins with a descent onto the impressive rock formations, often following the contours of the extended Bajo del Diablo platform. The dive usually progresses as a drift, guided by the prevailing currents that sweep through the area, bringing divers past schools of tropical fish and game fish. Depths commonly range from 18 to 35 meters, allowing for exploration of the varied underwater landscape, including overhangs and channels that provide shelter for diverse marine life. The turn point for the dive is generally determined by air consumption and no-decompression limits. The ascent is planned to gradually shallower sections of the rock, allowing for extended bottom time before reaching the safety stop. Safety stops are conducted in the 5-meter range, often offering further opportunities for observing reef life before surfacing.

Underwater photography

Devil's Rock provides excellent opportunities for both wide-angle and macro photography, thanks to its rich biodiversity and dramatic topography. For capturing the grand scale of the rock formations and schools of barracuda, snapper, and pelagic sharks, a wide-angle or fisheye lens is recommended. When focusing on whitetip sharks, manta rays, or other large animal encounters, ensure your strobes are positioned to illuminate subjects against the blue water. Macro enthusiasts can seek out moray eels hidden in crevices and colorful tropical fish. Strong buoyancy control is essential here to maintain position against currents and avoid disturbing delicate reef ecosystems, ensuring clear shots and subject protection.

Combine with nearby dive sites

• Bajo del Diablo

  A larger, versatile pinnacle dive site that Devil's Rock extends from.

• Coral Garden

  Known for healthy reefs and good visibility near Caño Island.

• Shark Cave

  Offers sightings of white-tipped reef sharks and moray eels.

• Paraiso

  Characterized by vibrant coral formations and abundant tropical fish.

• Wafer Bay

  Ideal for both diving and snorkeling, serving as a nursery for marine life.

Getting there & logistics

Access to Devil's Rock and the Caño Island Biological Reserve typically involves flying into Juan Santamaría International Airport (SJO) near San José. From there, domestic flights or ground transfers can take you to departure points on the Osa Peninsula, such as Drake Bay or Sierpe. Most dive operators offering trips to Caño Island depart from these towns, with boat rides to the reserve taking approximately 45 minutes to an hour. Day trips usually include two dives, park fees, gear, and a picnic lunch, lasting 7-8 hours. Liveaboards also include Caño Island in their itineraries, though dedicated liveaboards specifically for Caño Island are less common compared to Cocos Island. Park and diving fees are generally included in tour packages.

Safety & environment

The nearest recompression chamber is located in San José, Costa Rica, which necessitates significant evacuation time from Caño Island. Divers should carry comprehensive dive insurance that covers emergency medical treatment and evacuation, including air ambulance services. Site-specific hazards at Devil's Rock include potentially strong and unpredictable currents, requiring divers to be experienced in drift diving and capable of maintaining buoyancy in varied conditions. Thermoclines can lead to sudden drops in water temperature, so appropriate thermal protection is recommended. Always dive with a reputable operator, follow your dive guide's instructions closely, and adhere to dive plans, especially regarding depth and bottom time limits.

Who it suits — and who it doesn't

FAQ

Devil's Rock FAQ

Liveaboards diving Devil's Rock

These liveaboards may visit Devil's Rock on selected itineraries — the exact dive sites depend on departure, weather and conditions.

Cocos Aggressor

Costa Rica

22 guests37.8 m

$477/day

Sea Hunter

Costa Rica

20 guests

$690/day

Okeanos Aggressor II

Costa Rica

24 guests36.6 m

$582/day