Дайв-сайты: Nabeul Governorate

Zembra is a protected national park and UNESCO Biosphere Reserve. Diving requires advance authorization from the Agence de Protection et d'Amenagement du Littoral (APAL) in Tunis. Most dive operators based in Sidi Daoud or Kelibia handle the permit process for their clients. Only a limited number of divers are allowed per day, so booking at least two weeks ahead during summer is strongly recommended.

While Tabarka is known for its red coral pinnacles, Zembra offers dramatic vertical wall diving along the island's cliffs. The reserve status since 1977 has allowed marine life to flourish virtually undisturbed, resulting in grouper densities rarely seen elsewhere in the Mediterranean. The water clarity at Zembra also tends to be superior due to its offshore position in deeper, cleaner currents.

The optimal window runs from June through September, when sea conditions are calmest and water temperatures reach 24 to 27 degrees Celsius. Visibility peaks in July and August, often exceeding 35 metres. The crossing from Sidi Daoud takes roughly 45 minutes by fast boat, but can be rough outside the summer months. Spring dives in May are possible on calm days and offer cooler water with good grouper activity.