About CANYON do INFERNO
Canyon do Inferno is an intriguing dive site situated along Portugal's rocky Atlantic coast, just outside Cascais. This natural formation is a rugged underwater canyon carved directly into the coastal bedrock, reflecting the powerful geological forces of the region. The site's distinctive topography features steep stone walls, numerous narrow gullies, and scattered boulders, all contributing to a complex and dynamic environment. Divers here navigate these natural channels and rock formations, which provide shelter and habitat for various marine species from the Atlantic surge. The experience emphasizes exploring this naturally carved setting and observing the ecosystems within its dramatic structure. While no specific depths are provided, the site description suggests exploration within these features. Marine life likely includes species that seek refuge in crevices and behind boulders, although specific common sightings are not detailed beyond general categories like sharks, whales, dolphins, and turtles, which are listed as possible but without a clear indication of likelihood or seasonality for this particular site. It's important to note that these are broad categories for the region, and not necessarily guaranteed at this specific location. Given the natural channels and exposure to Atlantic conditions, divers should be prepared for a dynamic environment. The dive type is classified as a reef, indicating a focus on natural rock structures rather than artificial reefs or wrecks.
Highlights
Dive site facts: CANYON do INFERNO
- Current
- Mild
- Entry
- Liveaboard or dayboat
- Level
- Beginner
- Dive type
- Reef, Reef
- Region / port
- Portugal
- Coordinates
- 38.6910° N, 9.5020° W
Conditions & Currents
Currents are usually mild, which makes this a relaxed dive suitable for most certified divers. It is usually briefed as a dive for beginner divers. It can be dived from a liveaboard or a day boat, depending on where you start the trip. Tide, wind and season all shift the picture from day to day, so the crew's briefing on the boat always overrides any general description.
Why dive CANYON do INFERNO from a liveaboard?
CANYON do INFERNO is one of Portugal's signature dive sites. A liveaboard sleeps you on the water and puts you in the water for three to four guided dives per day, including dawn and night dives that day-boat operators rarely offer. You skip the daily commute back to port and reach quieter, less-crowded sites in the same region on a single trip.
Below are the liveaboards that include CANYON do INFERNO on their Portugal itineraries.
Liveaboards diving CANYON do INFERNO
These liveaboards may visit CANYON do INFERNO on selected itineraries — the exact dive sites depend on departure, weather and conditions.

Water And Wind
Portugal
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