Platja de Sant Feliu

La Llosa sits directly opposite the port — minutes by boat, making it the most convenient site in the Sant Feliu catalogue. The formation is a broad, flat rock slab descending from 5 to 24 metres, its surface fractured into a dense network of crevices and scattered with smaller outcrops. Octopus and morays claim the larger gaps. Along the margins, Posidonia meadows create a transition zone where a different invertebrate community thrives. The flat topography rewards slow, methodical movement: scan each crack rather than swimming fast across the surface, and the rock gives up its residents — nudibranchs, anemones, small crustaceans hiding in plain sight.

This is not the site that makes highlight reels, but it is the site that keeps the day productive. Minimal boat time means no wasted morning. Shallow depth means no certification pressure. And the crevice density means there is always something for a patient observer — Tritonia nilsodhneri nudibranchs on exposed rock faces, octopus retreating into gaps, wrasse schools streaming along the slab edges. The Posidonia margins add genuine ecological interest: the seagrass hosts a distinct community from the open rock, and the narrow transition band between the two habitats concentrates the greatest diversity on the dive.

The rock-to-Posidonia transition zone is where macro photographers should spend their time — nudibranch diversity peaks along this edge. Visibility can drop after storms as the shallow formation catches resuspended sediment, so check conditions if diving the day after rough weather. La Llosa works best paired as a morning warm-up before heading to deeper sites like La Red or the Port Salvi tunnels in the afternoon. The short transfer also makes it a reliable fallback — ask your centre about its availability when exposed sites are weather-cancelled.