Take your scuba skills beyond the basics with Dive Isla Bella’s 1.5-day Advanced Open Water course in Marathon, Florida. Master navigation, deep dives, and night diving across six thrilling boat trips.
More ways to explore the area's outdoor wonders
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Difficulty
moderate
Duration
1.5 days
Fitness Level
Participants should be in good health and capable of swimming moderate distances comfortably.
Wildlife
History
Marathon’s marine environment is part of the Florida Keys National Marine Sanctuary, established in 1990 to protect these unique reef ecosystems.
Conservation
Dive Isla Bella emphasizes responsible diving practices to minimize reef impact and supports local efforts to preserve reef health and marine biodiversity.
Dive Isla Bella
Take your scuba skills beyond the basics with Dive Isla Bella’s 1.5-day Advanced Open Water course in Marathon, Florida. Master navigation, deep dives, and night diving across six thrilling boat trips.
Dive Isla Bella is a scuba and snorkeling operator based in Marathon, Florida, offering boat charters, guided dives, training courses, and specialty programs. The operation runs a custom-designed vessel, the D/V Island Diver, available for private charters that include a dedicated Captain and Divemaster, complimentary beverages, and discounted rental equipment for groups. Reef Trip half-day excursions visit Florida Keys dive sites such as the Sombrero Reef Sanctuary on the third-largest barrier coral reef, with options for certified divers, SNUBA participants, and snorkelers of varied skill levels.
Training programs include Open Water Certification and Open Water Check Out Dives, the latter conducted over two half-day charters for students who have completed pool and classroom training. The Resort Course combines a four-hour pool and classroom session with a guided two-tank dive at a shallow reef and is available for ages 10 and up. The Advanced Open Water course is a 1.5-day program with three boat trips and six dives for ages 10 and up, with flexible agency options. Nitrox, Rescue, and Specialty Course offerings include a four-hour immersive session that incorporates CPR training and instruction from multiple recognized agencies for students age 12 and up.
Additional experiences include a Sunset and Night Dive trip near Sombrero Reef Sanctuary—returning at sunset near a historic lighthouse dated 1858—and a Hunting Certification taught over two half-day sessions covering gun handling, target practice, filleting, and resulting in a PADI or NAUI certification card. Refresher courses are also available to prepare returning divers. See The Adventure Collective.
Custom Vessel
D/V Island Diver
Private charters with Captain and Divemaster
Location
Marathon, Florida
Base for Florida Keys diving
Certifications
PADI • NAUI
Hunting course awards certification card
Age Minimums
10+ / 12+
Courses available for youth and teens
Select a private charter, reef trip, or certification course and check availability on The Adventure Collective listing.
Check Equipment Before Boarding
Ensure all dive gear fits properly and functions well before setting out on boat trips to avoid delays or complications underwater.
Hydrate Well Before Dives
Drinking plenty of water before diving reduces the risk of dehydration and helps prevent decompression sickness.
Practice Navigation Skills Onboard
Review dive site maps and compass techniques ahead of dives to prepare for navigation challenges underwater.
Prepare for Night Diving
Bring a reliable dive light and stay close to your instructor during night dives to ensure safety and optimal visibility.
Mask and Snorkel
Custom-fitted to ensure clear vision and ease during surface intervals.
Dive Computer
Tracks depth and dive time to enhance safety on multiple dives.
Wetsuit (3-5mm)
Provides thermal protection in cooler months for prolonged comfort underwater.
spring|fall|winter
Underwater Dive Light
Critical for night dives to illuminate surroundings and communicate with buddies.