Diving atHin Bida Reef (Thailand)
Hin Bida Reef, a submerged pinnacle, presents a compelling dive route between the Bida Islands and Koh Lanta. Its unusual 'duck foot' shape, with distinct fingers extending southwest, creates a dynamic underwater topography for exploration. Divers often plan visits here as a third dive, making the most of its shallower profile and reliable marine life encounters.
Evening condition tracking at Hin Bida Reef features an air temperature of 29.4°C. We have recorded wave heights measuring 0.12m during this period. These figures outline the environmental parameters currently present.
Dive Site Coordinates
7.6358, 98.8217
Key Dive Site Facts
Dive Site Overview
Hin Bida offers a distinctive dive experience within Thailand's Andaman Sea, primarily recognized for its consistent leopard shark sightings. This submerged coral reef, located east of Koh Bida Nai, consists mainly of large hard corals, presenting a unique landscape compared to other sites in the Phi Phi Islands region.
At low tide, some of its uppermost rocks may break the surface; at high tide it remains fully submerged. A rounded main body forms the reef, with three pronounced finger-like protrusions stretching towards the southern and southwestern directions. These fingers are separated by sand patches, which are often where divers observe leopard sharks resting.
Generally, depths extend to around 22 m (72 ft), though significant exploration takes place in shallower areas, often around 14 meters. Its accessibility makes it a suitable location for a range of dive experiences, from beginners to intermediate divers, allowing ample bottom time to appreciate the vibrant reef structure and its inhabitants.
Best Time to Dive
Planning a dive at Hin Bida can be rewarding throughout the year, as the site remains open for diving year-round. For an excellent experience, consider visiting during March or December, which typically receive the highest dive scores. During these months, rain levels are notably low, averaging around 1.48 mm in March and 2.30 mm in December. The air temperature remains pleasantly warm, with averages of 28.6°C (83.5°F) in March and 27.6°C (81.7°F) in December. While other months also offer good diving conditions, with dive scores generally between 7 and 8, the period from January to April tends to have some of the calmest wave conditions, with wave heights often below 0.55 m (1.8 ft). Rainfall increases from May to November, peaking around September, so divers during this period might encounter more variable surface conditions.
Climate Historical Averages
Monthly records compiled from satellite and marine observation nodes over the last 3 years. Data provided by Open-Meteo and MET Norway.
Dive Experience & Conditions
Descending upon Hin Bida, divers encounter a submerged reef extending to its maximum recreational depth. Visibility at the site varies, typically ranging from 5-20 m (16-66 ft), providing clear views of the extensive hard coral formations. Currents here are generally mild to moderate, allowing for comfortable navigation around the reef's distinct 'fingers' on the southern side. These coral-rich protrusions create interesting swim-throughs and sheltered areas. The reef itself is surrounded by a flat sandy bottom, rarely dropping beyond common recreational limits, making it an excellent location for extended bottom times. Water temperatures are consistently warm; regional averages suggest a comfortable range for diving, though specific data for Hin Bida aren't always consistently reported.
Dive Difficulty & Safety Guidelines
Approaching Hin Bida requires awareness of its remote, open-sea position. While suitable for beginner to intermediate divers, maintaining situational awareness, especially regarding moderate currents, is always prudent. The reef's shallowest peaks can break the surface at low tide, necessitating careful boat handling by dive operators. As with all dive sites, monitoring air consumption and no-decompression limits is essential, particularly given the opportunity for longer dives in its shallower areas. Dive guides are crucial for locating the best spots for marine life viewing, such as the sand patches where leopard sharks often rest. This practice helps minimize environmental impact and ensures diver safety.
Recommended Equipment
No verified equipment items yet.
Verified equipment recommendations for this dive site are being reviewed and may be added as additional source checks are completed.
Recommended Dive Suit
Experienced divers often bring flexible gear options.
The water around Hin Bida Reef is currently holding at approximately 32°C (89°F), setting the tone for today's dives. Surface air temperatures are resting at 29°C (85°F). Divers who spend longer periods underwater often choose dive skin or rash guard. A hood or vest is suggested for sensitive divers due to surface winds.
Current forecasts indicate relatively stable conditions for the coming days.
Conditions last reviewed: 18:00 using the latest environmental data.
Dive Logistics & Preparation
Hyperbaric Chamber
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Entry Requirements
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Currency
THB
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Marine Life at Hin Bida Reef
The underwater landscape of Hin Bida is a thriving ecosystem, most notably serving as a frequent home for leopard sharks. These sharks are often spotted resting calmly on the sandy patches found within the reef's shallower sections or along its fringes. Divers might encounter several of them during a single dive. Beyond these iconic residents, the reef hosts a rich variety of smaller marine creatures. Keep an eye out for cleverly camouflaged stonefish and the distinctly patterned pharaoh cuttlefish, often displaying vivid blue and white colors. Zebra morays are also a possibility, though spotting them can sometimes require a keen eye.
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Frequently Asked Questions
What is the typical depth range at Hin Bida?
Hin Bida generally ranges from the surface (at low tide) down to a maximum depth of 22 m (72 ft). Many vibrant sections and shark sightings occur in shallower areas, often around 14 meters.
Is Hin Bida suitable for beginner divers?
Yes, Hin Bida is considered suitable for beginner to intermediate divers. Its relatively shallow profile and generally mild to moderate currents make it an accessible site for those with less experience, provided they dive with a certified guide.
What marine life can I expect to see?
Leopard sharks are a primary attraction, often found resting on the sandy bottom. You may also spot stonefish, pharaoh cuttlefish with distinctive patterns, and occasionally zebra morays. The reef supports a diverse array of fish life.
How clear is the water at Hin Bida?
Visibility at Hin Bida typically ranges from 5 to 20 meters. Conditions can vary based on weather and plankton levels, but good visibility is common.
Can I visit Hin Bida year-round?
Yes, Hin Bida is one of the few dive sites in the region that remains open all year. However, conditions, particularly rainfall and wave height, can vary seasonally, with March and December offering excellent dive scores.
What is the reef structure like?
Hin Bida is a submerged reef, or pinnacle, with a rounded main body and three finger-like protrusions to the south. It's largely composed of hard corals and is surrounded by a flat sandy bottom.
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