Written by DiveJourney. Built from public sources and local operator knowledge. Last updated Dec 16, 2025.

• NOAA National Hurricane Center: hurricane season dates - Official Atlantic and Eastern Pacific hurricane season date ranges for trip planning.
• NOAA Fisheries: marine life viewing guidelines and distances - Minimum approach distances for whales, dolphins, seals, sea lions, sea turtles, and species-specific rules.
• NOAA National Marine Sanctuaries: Dive Into Your Sanctuaries - Overview of sanctuary dive sites and common regulations such as anchoring and take restrictions.
• Florida Keys National Marine Sanctuary: Buoy Program - Mooring buoy system and reef-protection context for boating and diving in the Keys.
• Flower Garden Banks National Marine Sanctuary: Regulations - Sanctuary rules including dive safety requirements and vessel practices.
• NOAA National Data Buoy Center (NDBC) - Real-time and historical marine observations (wind, waves, water temperature) to refine daily site selection.
• NDBC Historical Data - Station history downloads for planning seasonal patterns in water temperature, wind, and waves.
• National Park Service: Entrance passes - Current America the Beautiful pass types and base pricing.
• U.S. Department of the Interior: national park access announcement - Policy announcement affecting pass structure and pricing; verify current rules when booking.
• Divers Alert Network (DAN): Emergency Assistance - DAN emergency hotline and guidance for diving medical incidents.
• Official ESTA application (CBP) - Official portal for Visa Waiver Program travel authorization requirements.
• USA.gov: Visa Waiver Program and ESTA - Government overview of VWP and ESTA process and fees; check CBP alerts for recent changes.
• CBP Help Center: ESTA fee update - CBP alert page referenced for fee changes; confirm current fee at time of payment.
• Hawaii sunscreen ingredient restriction bill text - Legislative text prohibiting sale of certain sunscreen ingredients beginning January 1, 2021.