About this spot
Bay 1, known locally as Ao Ter, sits off Thailand's coast as an unprotected dive destination open to year-round exploration. The site hosts documented marine life across 12 species observations, offering divers a chance to encounter Thailand's diverse underwater inhabitants. Community video evidence from three separate visits documents the site's conditions and marine activity, providing real-world reference for what to expect. The site operates outside a marine protected area, making access straightforward for visiting divers. Current coral bleaching monitoring shows alert-level conditions, reflecting broader environmental pressures on Thai reef systems. This context matters: divers visiting should understand they're exploring an active ecosystem under stress, not a pristine reserve. Bay 1 works as a year-round destination, meaning seasonal variation is minimal enough that planning doesn't hinge on narrow windows. Water conditions, depth, and difficulty remain variable—check with local operators for current site specifics before booking. The combination of accessible location, documented marine life, and community video references makes this a solid choice for divers seeking authentic Thai diving without designation as a formal protected site.
📖 Guide: Diving in Thailand: 73 Sites from Whale Sharks to Shallow Reefs
Best months
Dive types
Trip essentials
Everything you need before you pack — checklist, sun, logistics.
Trip checklist
- 🛂 Visa-free or visa-on-arrival
- 📜 C-card + dive insurance (DAN)
- 📔 Dive logbook
- 🧴 Reef-safe sunscreen SPF 50+
- 🔌 Plug type A/B/C · 220V adapter
- 💊 Seasickness meds + ear drops
- 📱 Offline maps + emergency contact
Quick facts
- 🌓 Moon First quarter · 48%
- GPS
› Sustainability disclosures
From your departure country
- Visa: Visa on arrival · 30 days max
- Flight: 11h · direct
- Jet-lag: 12h east · 8 days recovery
FAQ
›When is the best time to dive Bay 1?
Bay 1 is diveable year-round, so seasonal timing is flexible. Check with local dive operators for real-time conditions, as weather and visibility can shift. Community videos from multiple visits provide realistic reference for what to expect across different periods.
›What is the depth and difficulty level?
Exact depth and difficulty ratings are not documented for this site. Contact local operators before your dive to confirm site conditions, depth range, and suitability for your certification level.
›What marine life can I expect to see?
Twelve species observations have been recorded at Bay 1. Community videos document actual wildlife encounters at the site. Bring a fish ID guide or reference app to maximize your ability to identify what you see during your dive.
›Do I need permits or special access?
Bay 1 lies outside a marine protected area, so access is straightforward. Standard Thai diving regulations apply. Confirm any local requirements with your dive operator or accommodations before arriving.
