Duration1 hr, 40 mins
The Lagoa Misteriosa contains a water column of more than 220 meters — the fifth largest flooded cave in Brazil. Scuba diving is the only way to access this scenery: rock walls descend beyond the reach of light, preserved tree trunks rest on the bottom, and the blue shifts from shallow turquoise to absolute darkness.
Those who have never dived before do the introductory dive, with the instructor controlling all the equipment during the 30 minutes of immersion. Those with Open Water certification descend to 18 meters, and those with advanced certification extend the limit to 25 meters — still far above the unfathomable bottom.
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The transparency comes from aquifers that filter the water through limestone over millennia. The result is visibility that lets you see the outlines of the walls several meters away, something rare in flooded caves.
The water temperature is lower than that of the region’s rivers and swimming areas because it comes from depth. The wetsuit provided by the operation is what keeps you comfortable during the dive, and we recommend that all visitors wear it fully.
During the introductory dive, the instructor holds the cylinder, regulates buoyancy and leads the entire route — the visitor breathes, watches and follows along, without operating any equipment. The maximum depth is 8 meters, equivalent to a three-story building submerged.
With the Open Water credential, the diver operates their own equipment and descends to 18 meters, where the walls begin to darken. With Advanced Open Water certification, the limit rises to 25 meters — enough to feel the scale of the abyss, even with the bottom almost 200 meters away.
⚠️ From mid-September through mid-April, introductory dives are suspended due to the proliferation of microalgae that reduces visibility.
Certified divers continue diving normally throughout the year. If your trip falls during this period and you do not have certification, other snorkeling tours in Bonito maintain the activity without interruption.
📍 50 km from downtown Bonito · ⏱ 1h40 · Difficulty: moderate
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The instructor presents the equipment, explains underwater communication signals and adjusts the mask. If you have a beard, it is best to be clean-shaven — facial hair can compromise the seal and allow water to enter. Belongings are stored in the changing-room lockers before entering the water.
The entry is assisted by the instructor, and in the first few minutes, adapting to breathing and to the water temperature takes all your attention. Then, the scenery opens up: the walls descend vertically, submerged trunks rest on the bottom and rock formations reveal textures that surface light does not reach. The instructor leads the route and keeps control of the depth.
Upon returning to the surface, there are showers and a changing room for getting changed. The lockers release the belongings stored during the dive. The on-site restaurant is available for those who want to have lunch after the activity, but the meal is not included.
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30 effective minutes of diving within 1h40 total
Photo recording service available for hire (provided by the attraction)
Transportation not included — transfer available through Bonitour
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Lagoa Misteriosa is not a natural aquarium, and it is important to adjust expectations before booking. Those expecting colorful schools of fish and abundant submerged vegetation may be disappointed — the attraction is the geological formation: walls, rocks, trunks and the depth no one has ever reached. The experience is one of contemplation before an underwater landscape that has existed for millennia.
Those who are afraid of the dark or uncomfortable with depth will feel tension when the wall disappears into the dark blue. If the priority is observing fish and aquatic life, other snorkeling tours in Bonito are more recommended.
Pregnant women, people with pacemakers, people with epilepsy, stroke, heart attack or recent surgery (up to 30 days) cannot dive
Respiratory, cardiac or inner ear problems can be aggravated — inform the instructor of any condition
Continuous-use medications must be brought by the visitor
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Being familiar with the water is recommended. During the introductory dive, the instructor accompanies you throughout the activity and controls the equipment.
We do not recommend it, as they interfere with the experience and may be lost or damaged. The operation offers photo records.
The minimum age is 10. For younger children, our consultants suggest suitable alternatives.
Tour duration: Around 1h40. Dive time: 30 minutes.
Included in the tour price: Instructor, accident insurance and required diving equipment.
Beard and Mustache: It is recommended to come to the tour clean-shaven, as some types and lengths of beards and mustaches can interfere with the mask seal on the face and compromise enjoyment of the tour.
We do not recommend that visitors take cameras during the dive, as they interfere with the experience and may also be lost or damaged. The same applies to cell phones.
Pregnant women (at any gestational age) cannot dive.
Visitors with recent invasive surgery (up to 30 days), epilepsy, history of stroke, history of heart attack, history of anaphylactic shock (anaphylaxis) and pacemaker users cannot take the tour.
Visitors must inform the diving instructor and reception of any health problem; they will check for medical restrictions and inform whether it is possible to take the tour.
When necessary, visitors must carry their own medications.
Visitors under the influence of alcohol or drugs cannot participate in the activity.
Consumption of alcoholic beverages before the activities is prohibited.
⚠️ IMPORTANT: People with respiratory or cardiac problems, labyrinthitis, inner ear disorders, or any other restrictions that lead to loss of consciousness may have their health conditions worsened as a result of the activity.
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