Els Canons de Tamariu

Three to five parallel rocky ridges run northeast across the sea floor, close enough together that the sand channels between them read as canyons with walls. Drop into one of those channels from the 9-12m mooring and the geometry takes over — a vertical wall on each side, sand below, gorgonians on both faces from your shoulders down. The second ridge is the most photogenic stretch, its walls thick with red Paramuricea clavata and yellow Eunicella cavolini, with the coralligenous bottom full of holes and cracks sheltering moray eels, squid, and lobsters.

The visual rhythm shifts with depth. From the reef roof to about 18m the upper canyons read as a complex reef — gorgonian-tipped boulders, damselfish columns rising off the ridges, sight lines into the channels. Between 18 and 30m the walls take over and the gorgonian carpet thickens; this is wall-species territory, with morays in the cracks, scorpionfish on the ledges, lobsters in the holes, and grouper patrolling the gaps between the ridges. Look outward into the blue regularly — barracuda schools cross the canyon openings — and return along the north side of the first ridge for a different character, more cracks, more squid, and depth that eases off in time for the safety stop.

The parallel-ridge geometry is what makes the route flexible. You can cross the crests perpendicular, run a single channel longitudinal out and down, or trace a figure-eight if bottom time allows. The ridges act as a navigation backbone in a way that exposed pinnacle dives in this area do not offer.

The architecture comes first here. Three to five rocky ridges packed close enough that the sand channels between them read as canyon throats rather than gaps between reefs — half a nautical mile offshore on the central Costa Brava, with continuous gorgonian-carpeted walls forming corridors you glide through rather than swim past. A long-running local metaphor — surfacing in Catalan diver chatter around 2006 and repeated by operators across two decades — frames the swim as flying through those throats. The corridor experience is distinct on this coast, where most signature sites are pinnacles or open walls.

Gorgonian density is the second-order draw. One experienced diver, comparing directly with Illes Medes in 2011, noted that while marine life quantity is lower at Canons, the gorgonians are overwhelming. That is the calibration the site rewards: a landscape dive, not a fish-counting dive. The wall colour deepens between 20 and 30m where the carpet is thickest, and the architecture stays legible for the full descent — descend a channel, swim out, return along the next ridge.

Bring a torch. Canyon interiors are dim and the light reveals the gorgonians' real colour even in good visibility. The 9m mooring depth allows long dives up to 60 minutes without decompression obligation, but the canyon floor drops past 40m. It is easy to follow a channel deeper than planned, so set a hard depth limit with your buddy before splashing in.

A thermocline sits below 20m even in July and August, and bottom temperatures fall to 14-19°C — considerably colder than the surface. For the full canyon profile, a 7mm wetsuit or hood is worth considering even in summer. The site is offshore enough that surface chop is part of the boat ride, and the run from Palamós takes 30-40 minutes; closer ports — Tamariu, Llafranc, Aiguablava — get you to the mooring in under 10. Multiple independent centres operate the site from each of these ports, so booking is rarely the constraint.