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From the mountain to the sea.

A reef manta ray gliding over coral in hazy blue water at Manta Bay, Nusa Penida.

Ocean · Nature · Adventure

Manta snorkelling day, Nusa Penida

A morning on the water with reef mantas, and the rules that keep them coming back.

Time
A day: 07:00 meeting, back at Sanur by about 15:30
Group
Small group, 2 to 10 guests
Fitness
Moderate
Altitude
−10 m, Manta Point cleaning station

The day, in short

A small-group boat day from Sanur to Nusa Penida to snorkel with reef manta rays at Manta Bay, then a second reef and lunch on the island. We keep distance, never touch, and say plainly that mantas cannot be promised.

  • Manta Bay first, while it is calm
  • A second snorkel site and lunch ashore
  • Guides who enforce distance and no touching

Who it suits

Confident swimmers. Minimum age 10 (sample rule). Not recommended in pregnancy or for anyone prone to seasickness.

How demanding

You must be a comfortable swimmer in open water with a mask, snorkel and fins. Currents and swell vary, life jackets are available, and the boat landing can be bumpy.

What happens

  1. 07:00

    Meet at Sanur

    A safety briefing, life jackets and your equipment, then onto the boat.

  2. 07:30

    The crossing

    About 35 to 45 minutes to Nusa Penida, depending on the swell. The sea in the Badung Strait can be lively.

  3. 08:30

    Manta Bay

    Reef mantas come here to be cleaned, and they glide just under the surface. The morning is best. You float; you do not dive down, chase, or reach. Keep about three metres away, always.

  4. 10:30

    A second reef

    Another snorkel stop chosen for conditions on the day, such as Crystal Bay or Gamat Bay.

  5. 12:00

    Lunch on the island

    A simple meal at a beachside warung.

  6. 13:30

    The crossing back

    Sun-dried and sleepy.

  7. 15:30

    Back at Sanur

Included and not

Included

  • Included: Boat crossing and boat time for the day
  • Included: Mask, snorkel, fins and life jacket
  • Included: A snorkel guide in the water
  • Included: Lunch, water and fruit
  • Included: Marine and harbour fees

Not included

  • Not included: Hotel transfers (available for a fee)
  • Not included: A wetsuit top, if you feel the cold (hire)
  • Not included: Tips
  • Not included: Underwater camera hire

Bring and wear

Tick things off as you pack. The ticks stay on this device.

Where we meet

Sanur beach at 07:00 (hotel transfers can be added).

We send the exact boarding spot and a map pin the evening before. Transfers from Ubud and the south coast are available for a fee; ask when you enquire.

Meet at Sanur at 07:00

With the mantas

  • Never touch a manta. Its skin carries a protective mucus layer, and a hand strips it away.
  • Never chase or fin after one. They are far faster than you, and chasing only stresses them.
  • Keep about three metres away and do not swim directly above the cleaning station.
  • Take no single-use plastic into the water and leave nothing on the reef.

When it works best

Reef mantas visit Nusa Penida all year, but there is no guarantee on any day, and some mornings you will not see one. Mornings are best, which is why Manta Bay comes first. We will always tell you what the water is doing. If we do not see a manta, we say so, and we do not stretch the truth to make the day.

Cancellation. Sample policy: free changes or cancellation up to 48 hours before. If the harbour closes for weather, you can rebook or take a full refund.

Good to know

Each fact was checked on the web on the date shown. Where a fact comes from one source only, we say so.

Crossing time from Sanur
About 35 to 45 minutesChecked 6 Oct 2026. Source: Tripadvisor and GetYourGuide listings
Mantas
Present year-round at Manta Bay and Manta Point; sightings are not guaranteed, and mornings are bestChecked 6 Oct 2026. Source: Snorkel and dive operator guides (Journey Era, Bali Aqua, Nusa Penida dive guides)
Depth at the cleaning station
About 10 m at the Manta Point cleaning station; the mantas also come close to the surface at Manta BayChecked 6 Oct 2026. Source: Nusa Penida dive operator guides
Rules
Never touch, never chase, and keep about 3 m awayChecked 6 Oct 2026. Source: Bali Aqua manta code of conduct and other operators

Photograph credits are on the credits page.

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