Cascais & Cabo Raso · Portugal · Reef
Baía da Guia
Small passages through the reef top on the swim back to the sand
Baía da Guia, also called Guia Lighthouse, is a reef west of Cascais that runs southwest from the bay between 5 and 14 m. The dive starts on white sand, follows the reef out and returns over its top through small passages. Bream, rockfish, octopus and shrimp line the walls, with flounder on the sand.
Also known as Guia Bay, Guia Lighthouse.
Where it is and how deep
38.6956° N, 9.4464° WApproximate position — the dashed circle shows where the site lies; your operator's briefing has the mooring.
The dive
The dive starts in an area of white sand and follows the reef to the right as it extends southwest of the bay. Schools of small bream, rockfish, octopus and shrimp appear on the walls, and cuttlefish appear ahead of the group.
On the way back the route hovers above the reef, entering the small passages that open in its top. Flounder lie on the sand, visible to divers who watch the bottom closely.
Marine life and season
- Octopus & cuttlefish
- Reef fish swarms
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Good | Good | Good | Good | Good | Good | Good | Good | Good | Good | Good | Good |
Season follows Cascais & Cabo Raso: Boats run all year; the sea is coolest around March and warmest around September.
Sources
- Baía da Guia – ScubaGo dive site — ScubaGo
- OpenStreetMap — OpenStreetMap
More dive sites in Cascais & Cabo Raso
Countless nudibranchs below the rocky recess that names the site
Reef
Large gorges that look like the Sintra hills on a clear day
Reef
Sheltered bay where an undulate ray turns up on lucky days
Small-spotted catsharks on a rock-and-sand bottom at 24 m
Beach entry onto a reef split by cracks running out from the shore
Reef
Try-dive reef where nudibranchs, octopus and cuttlefish share 8 m of water
Similar dives elsewhere
Anchors, masts and a sunken buoy on an 8 m harbour bottom
Wreckage and coal at 12 m under a reef that crests at 1.5 m
Easy 2-metre entry, small wreck off the point
A false ceiling right around a 10 m shoal off Corralejo