Roca Muladera

A ten-minute boat ride from Tossa port ends at a rock that barely breaks the surface on calm days. The anchor drops into the canyon between two formations at eight metres -- the main rock on the left rising above the waterline, a smaller platform on the right sitting at three metres. Descending southward along the canyon, the walls close in on both sides, creating a corridor where conger eels and moray eels occupy the crevices and nudibranchs colour every surface. At 18 to 24 metres the canyon opens to a sandy bottom where the groupers hold territory. These are not shy fish -- the dusky groupers of Roca Muladera are the reason TossaSub calls this the number one seabed dive in Tossa. Turning the dive at half tank, the return route follows the opposite face of the main rock at shallower depth, where lobsters and octopus provide the safety-stop entertainment.

Roca Muladera is the grouper dive of Tossa de Mar, full stop. Every source that describes this site mentions groupers first, and TossaSub's recommendation is blunt: "Si quieres ver meros es una buena eleccion" -- if you want to see groupers, this is a good choice. But the site earns its top rating for more than one species. The canyon between the twin rocks produces backlighting that Dream Dive calls magnificent, with sunlight filtering through the gap and illuminating the walls from behind. The layout is also unusually good for navigation practice: two distinct rock masses, a defined canyon, and clear depth zones make it a site where divers can work on compass skills and natural navigation without the risk of disorientation. It is one of only three Tossa de Mar sites that PADI lists in its Spanish dive directory.

This is a boat dive only -- no shore access. The rock barely shows above the waterline, so the boat captain handles positioning. Air management matters more here than at Mar Menuda: the interesting sections are at 17 to 24 metres, which cuts into bottom time on a single tank. Dive at a comfortable pace, start deeper, and ascend gradually along the rock for the best use of air. The site has no overhead environment and the canyon walls provide shelter, making it a good step up for divers who have done their shore dives at Mar Menuda and want to try a boat dive without a major difficulty jump.