Three metres, horizontally
Not three metres above. Overhead position blocks the light and the escape route at once, and a manta reads it the way you would read someone standing over you.

Snorkel & Dive · Etiquette
Three metres, held horizontally. No touching, no chasing, approach from the side and never head-on. These are not politeness rules — they are the reason the station keeps working.
Book a briefed operatorKeep at least three metres, never touch or chase, approach from the side rather than head-on, and let the animal control the encounter. Mantas are slow, curious and easily displaced from the coral heads they need.
Every reputable operator briefs these before anyone enters the water.
Not three metres above. Overhead position blocks the light and the escape route at once, and a manta reads it the way you would read someone standing over you.
No hands on the animal, and no hands or fins on the coral heads that are the cleaning stations. Manta skin carries a mucus layer that a touch strips off.
A head-on approach reads as a block. Coming in from the side leaves the animal its line and lets it choose whether to come closer.
Hold still and wait. Chasing gets you one short view of a manta leaving; waiting gets you repeated passes from an animal that has decided you are not a threat.
Watch for stress signals: a sharp turn away, a sudden dive, or a manta abandoning a cleaning station it was holding. Any of those means back off, not press in.
Indonesia publishes no manta-specific minimum distance for snorkellers or vessels. Three metres is the park-and-operator standard applied here, and this site says so rather than implying a statute that does not exist.
It holds anyway because the reason behind it is behavioural. A cleaning station only works if the animals will hold position on it. Crowd them repeatedly and they stop coming, and then there is no site.
That is also why the no-touch rule is not squeamishness. Manta skin carries a protective mucus layer, and a hand strips it in the place it was touched.
In practice
Nothing dramatic happens. That is the point.
The guide covers distance, approach angle, stress signals and where the boat will be. If nobody says any of that, that is the warning sign.
Everyone in at once, spread along the drift rather than converging on one animal. A wall of people on one manta is how a station gets abandoned.
You stay on the drift line and let the animal work. Most of a good encounter is doing nothing while something enormous decides you are furniture.
Ambient light, no flash, no repositioning to get the frame. If the shot needs you closer than three metres, it is not a shot you take here.
Group size matters more than any individual’s behaviour. A small group with a guide who thins it out beats a large one where everybody is well-intentioned.
The site itself, and the depth canon.
Read more
Every Manta Point topic, in one index.
Read more
The 2014 decree, the IUCN listing, and CITES.
Read more
The drift technique and what to bring.
Read more
Getting the frame without costing the site.
Read moreYou control one thing here: who you hand your money to. Ask Komodo Luxury how they brief conduct and how they manage group size at a busy station.