www.billbeardcostarica.com · Operator
Depth, shark, manta, and trip-logistics context.
Dive Spot Guide•
Bat Island: Big Scare, Gran Susto
Bat Island: Big Scare, Gran Susto - advanced bull-shark boat dive.
Local operator required
Local boat logistics and timing are needed for sea-state checks, park access, and shark-season planning.
Boat dive off Guanacaste in Santa Rosa National Park, with shark-season timing, strong currents, and a deep, open-water profile.
About Bat Island: Big Scare, Gran Susto
Bat Island: Big Scare, Gran Susto is a boat-only advanced dive in Costa Rica's Bat Islands, inside Santa Rosa National Park. The site is known for bull shark encounters, strong current sensitivity, and a deep, open-ocean feel that rewards experienced divers who can time the season and stay conservative on the descent and ascent.
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Research Estimate At Bat Island: Big Scare, Gran Susto
Conservative baseline from public research. No community dives logged yet.
VisibilityVisibility: 15m
AccessChallenging entry effort
CoralSome damage
Aquatic LifeExceptional variety
FacilitiesLimited facilities
Crowd / PopularityModerate
CurrentStrong current
SurgeStrong surge
Where Is Bat Island: Big Scare, Gran Susto?
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Community sourced coordinates.
Bat Island: Big Scare, Gran Susto Planning Details
Depth range, seasonality, and planning context.
Reported Depth
15m - 30m
Depth Note
The main shark-cleaning zone sits around 15-30 m, and some dives reach roughly 30 m.
Best Season
May to November for the bull-shark season.
Typical Conditions
Advanced boat diving with a shark season, rough-water departures, and variable visibility.
Safety & Access At Bat Island: Big Scare, Gran Susto
Hazards, restrictions, and access requirements.
Key Hazards
Dangerous wildlifeStrong currentWaves
Safety Notes
Use an experienced crew, keep conservative limits, and treat the site as a serious shark dive.
Access Restrictions
Advanced Open Water or equivalent recommended; strong currents and quick descents are common.
Legal Notes
Inside Santa Rosa National Park and a protected marine area; park fees apply.
Local Intel For Bat Island: Big Scare, Gran Susto
Community notes to help plan your visit.
Scuba Diving
Best as an experienced boat dive with a quick descent, conservative gas planning, and a crew that knows the seasonal conditions.
Recent Logged Visits At Bat Island: Big Scare, Gran Susto
Community dive logs and visit reports for this site.
Dive Spot Log Averages At Bat Island: Big Scare, Gran Susto
Average conditions based on logged dives & visits.
Conditions
Avg. Visibility15m
Activity
No dive activity logged yet.
