Bida Nai

Best time to dive

January to December; November to April; June to October

What you might see

• Flamboyant cuttlefishLikely
• Grey reef sharkPossible
• Manta rayPossible
• Moray eelLikely
• Whale sharkPossible

Sightings are seasonal probabilities, not promises - even in peak season nature does its own thing.

Certification & difficulty

Advanced Open Water - advanced conditions (currents/depth); dive within your training.

Snorkelling

Snorkel-friendly - Yes - the shallow bay and boulder area are commonly included on snorkel/day-trip boats; blacktip reef sharks are sometimes seen from the surface

Safety notes

Surge/current around exposed points, bearded scorpionfish hidden in the swim-throughs (buoyancy control needed), heavy boat traffic overhead as this is one of the busiest day-trip sites in the region

Permits & fees

Site lies within Hat Noppharat Thara-Mu Ko Phi Phi National Park; diver fee cycle reported as ~600 THB on day 1 (400 THB park entrance + 200 THB diving supplement), then 200 THB/day for days 2-3 before the cycle repeats; snorkellers/non-divers pay a 400 THB single-visit entrance fee (foreign children ~200 THB); fees are usually collected by the dive operator and subject to change - confirm current rates before booking

Permits and operators change - confirm before booking.

Location

Nearest hub: Koh Phi Phi