DIVE TRIPS FOR CERTIFIED DIVERS – COSTA RICA
CERTIFIED DIVERS
Please bring your certification card from PADI, SSI, CMAS, NAUI, or another recognized diving organization.
Everyone is welcome here!
At Deep Blue Diving, we offer a relaxed and personalized diving experience in small groups, always guided by a professional Divemaster or Instructor. Our high-quality rental equipment ensures you’re comfortable and ready to enjoy every moment underwater.
Certified divers with their own gear can take advantage of our tank and weight prices—we’ll handle transport, setup, rinsing, and storage for you. Discounted equipment packages are also available for our daily dive trips.
All our dives are full-service and include the boat, captain, bilingual guides, tanks, weights, snacks, fresh fruit, drinks, and plenty of fun.
Join us and explore the underwater beauty of Costa Rica!

Frequently Asked Questions
Depending on the season and dive site, divers may encounter turtles, reef fish, stingrays, sharks, octopuses, nudibranchs, seahorses, harlequin clown shrimp, frogfish, pufferfish, dolphins, and seasonal pelagic species. During manta season from December to April, manta rays can be seen around the Catalina Islands. From May to October, bull sharks can be encountered around the Murciélago Islands (Bat Islands).
The best time to see giant manta rays is from December to April at the Catalina Islands. These islands are among the most well-known spots for manta ray watching.
The best time to dive with bull sharks at the Bat Islands (Islas Murciélagos) is from May to October. Due to the depth and conditions (currents and swell), these dive sites are only suitable for advanced divers with good experience.
Costa Rica offers great diving year-round, but the best time depends on what you want to see and the conditions you prefer.
VISIBILITY:
- 15 – 80 feet
- 5 – 25m
WATERTEMPERATURE:
- Average 78-86F° – Thermoclines in Feb/Mar down to 65F°
- Average 25-30C° – Thermoclines in Feb/Mar down to 19C°
Dry season (November–April)
- Cooler water (24–26°C)
- Nutrient-rich conditions
- Higher chances of encounters with rays and manta rays around the Catalina Islands
- More plankton and sometimes lower visibility
Rainy season (May–November)
- Warmer water
- Generally better visibility and overall diving conditions
- Best season for bull shark diving at the Murciélago Islands
Visibility can vary from day to day, but marine life is abundant throughout the year, making every dive unique and exciting.



