Isla de Santa Eulalia

The south side starts on a gentle reef slope that funnels into what the local dive centre calls the Aquarium — an area where fish concentrate in visible density, species mixing in schools that use the reef structure as a staging ground. The bottom reaches 26 metres but most of the action is shallower, where the reef creates enough complexity in its boulders and ledges to hold populations of resident and passing fish. The north side offers a different character: swim-throughs at two depths, one at 15 metres and another at 27, linked by reef wall that creates a more structured dive profile. Both sides share the advantage of proximity — you are back at the boat in minutes after surfacing.

Isla de Santa Eulalia is the closest marine-reserve dive site to the Cala Pada centres, making it the dive you do when weather limits range or when you want a second dive without a long transit. That accessibility does not diminish the diving: the marine reserve status keeps fish populations healthy, and the Aquarium area on the south side delivers on its name with schooling fish in numbers that would be reduced on an unprotected reef. The north side's twin swim-throughs add topographic interest without the overhead risk of true cave diving. For divers staying in the Santa Eulalia area, this is the site they return to most often.

No fuel surcharge and no special certification required. The short boat ride makes this a practical option when conditions elsewhere are marginal — the east coast is sheltered from the prevailing summer winds. Both sides are Open Water level, though the deeper swim-through on the north side at 27 metres is near OW limits. Marine reserve permit is required and handled by your dive centre.