Open Water Diver

The SSI Open Water Diver at Arrecifal is structured to keep the theory off the island. After booking, SSI sends a personal link to your digital manual — you work through it at home, at your pace, before travelling to La Restinga. By the time you arrive, the academic side is done, and your three days on El Hierro go entirely to in-water training. That's not just a convenience; on an island where accommodation and boat spaces fill fast in season, it makes the most of every day.

The course runs across three days minimum, though Arrecifal recommends building in an extra day for confidence and exploration. The confined-water sessions — where skills like mask clearing, regulator recovery, and buoyancy control are first practised — use a controlled setting before moving to open water. The four open-water training dives then apply those same skills in the real environment: the volcanic seabed of the Mar de Las Calmas, with its lava formations, garden eels, morays, and resident groupers.

The certification is SSI Open Water Diver, recognised internationally and ISO-certified. It qualifies you to dive with a buddy of equal or higher certification in conditions equivalent to your training, to a maximum of 18 metres. That 18-metre limit opens up the majority of recreational dive sites worldwide, including most of what El Hierro itself offers. If you subsequently want to go deeper, the Advanced Adventurer course and Deep specialty both pick up from where this one leaves off.

Minimum age is 10 years, which means families can certify together. The same medical questionnaire required for the Bautismo applies here. The online theory component — including the digital manual — is included in the course price, so there's nothing extra to purchase before arriving.