Lagoa Misteriosa
Batismo (introductory): operator zone [1] (No certification; maximum 8 m; two visitors per instructor; suspended in algae season.). Autônomo Básico (basic): operator zone [1] [2] (Open Water; maximum 18 m; up to four per instructor; suspended in algae season.). Autônomo Avançado (advanced): operator zone [1] (Advanced Open Water; maximum 30 m; up to four per instructor in the blue season, up to two by consultation in the green season.). Mergulho técnico (technical): operator zone [3] [4] (By consultation, based on the dive plan; no published depth limit.). These categories are the named scheme's own; they describe the training a site calls for.
Blue-water dives down the walls of a flooded sinkhole near Jardim, with published categories from an introductory dive to 8 m to advanced dives to 30 m, and technical diving by consultation. Basic dives pause during the algae season.
Divers reach Lagoa Misteriosa on foot: a trail of about 1,100 m round trip leads to a stairway of 185 steps down to the water at the bottom of the forested doline. Dives follow the steep rock walls of the flooded shaft, past fallen logs, white sand deposits and two deep blue areas the operator describes.
The operator sets limits by certification and season. In the clear-water period, basic dives go to 18 m and advanced dives to 30 m with up to four divers per instructor; in the green-water season advanced dives are by consultation with up to two divers per instructor. Technical dives, which use special gas mixtures and procedures for depths beyond recreational limits, are arranged by consultation on the basis of a dive plan.
All dives are booked through accredited travel agencies. A dive lasts about 30 minutes within a visit of about two hours.
The environment
Clear, still fresh water in a near-vertical sinkhole with rock walls, sunken logs and pale sand ledges. The operator gives a constant 24 °C. Microalgae blooms turn the water green and cut visibility from roughly mid-October to mid-April.
Conditions
Algae season roughly mid-October to mid-April (operator pages differ on the start month); introductory and basic diving and snorkelling are suspended then. A cold front can clear the water temporarily. Heavy rain can cancel or interrupt visits. Press in 2025 described the visiting season as April to September.
Typical ranges from published sources, not current conditions.
Facilities
Trail of about 1,100 m round trip and a 185-step stairway to the water; equipment supplied (short wetsuits only); accident insurance during the activity. The operating group states a safety management system certified to ISO 21101 since 2020.
Every fact on this page, with its source (14)
| Fact | Status | Source |
|---|---|---|
| The attraction's address is BR-267, km 512, rural zone, Jardim, Mato Grosso do Sul. | Verified | [4] |
| In 1998 a diver reached 220 m without seeing the bottom; the operator stresses this is an exploration depth, not a visitor dive depth.Visitor dives are limited to 30 m at most (advanced category). | Reported | [6] |
| Published categories: introductory, no certification, 8 m, two visitors per instructor; basic, Open Water, 18 m, up to four; advanced, Advanced Open Water, 30 m, up to four in the blue season and up to two by consultation in the green season (September to March). | Verified | [1] |
| Technical diving is listed as an activity and is booked by consultation based on the dive plan.No requirements or depth limits are published for it. | Verified | [3] [4] |
| The water stays at 24 °C year-round.Operator figure. | Reported | [2] |
| Algae typically bloom from mid-October to mid-April, suspending basic and introductory diving; a cold front once kept the water clear for seven days in November.s3 says the suspension runs from October to about mid-April. | Verified | [2] [3] |
| In 2025 the visiting season was reported as April to September. | Reported | [7] |
| A dive lasts about 30 minutes and the whole visit about two hours; the trail is about 1,100 m round trip with 185 steps to the lagoon. | Verified | [1] [3] |
| Minimum age for scuba is 10, with under-12s accompanied by a parent or guardian; certified divers must present their card. | Verified | [1] [3] |
| Recording equipment, drones, lights, knives and dive weights are prohibited for the general public; sunscreen and repellent are banned. | Verified | [2] |
| Pregnancy at any stage, spontaneous pneumothorax history and pacemakers are exclusions on the dive and preliminary-information pages.The FAQ (s2) allows pregnant visitors up to 24 weeks to dive if they follow safety guidance. | Sources conflict | [1] [3] |
| Visits must be booked through a travel agency; the operator lists accredited agencies in Bonito, Jardim, Campo Grande and São Paulo, and recommends booking a month ahead for July and January school holidays. | Verified | [5] [1] |
| Equipment is supplied (short wetsuits only) and accident insurance covers the activity. | Verified | [1] [3] |
| The group states it has had a safety management system certified to ISO 21101 since 2020, with annual audits.Provider claim. | Reported | [6] |
Verified: stated by an official or primary source we opened. Reported: from a secondary source only. Sources conflict: the note gives both versions. May be out of date: the newest source we found is old.
Written in our own words from the sources above. Report a correction