El Desierto in El Hierro is a diverse marine site featuring a combination of volcanic rock beds, sandy flats, caves, and artificial reef structures. Located 3500 metres from the shore, this site requires boat access and offers depths ranging from the surface to 40 metres, with an average depth of 15 metres. Conditions are generally favourable for beginners, with mild currents and visibility extending between 10 and 50 metres. Divers should remain aware of the potential for nitrogen narcosis at greater depths. The site provides a varied underwater topography suitable for exploration across a wide range of depths.

El Salto is a diverse marine site located in El Hierro, Canary Islands, offering a combination of reef, cave, and canyon topography. Divers can explore these varied structures at depths ranging from 10 to 20 metres, with an average depth of 15 metres. Access to the site is by boat only. Conditions are generally favourable with visibility between 20 and 30 metres and mild currents, though divers should be aware of the potential for strong currents. The water temperature fluctuates between 20C and 24C throughout the year. This site is suitable for beginner divers looking to experience the unique underwater volcanic formations of the region.

La Cueva del Diablo in El Hierro offers a combination of cave, cavern, and reef diving. The site features depths ranging from 8 to 20 metres, with an average depth of 12 metres. Visibility is typically between 20 and 30 metres, though divers should monitor their depth and stay close to their team due to variable clarity. Currents are mild, making the site suitable for beginners. Access is by boat only, and a torch is recommended to explore the cave walls. Water temperatures range from 20 to 24 degrees Celsius. Dives typically last 45 minutes.

Punta del Lajial is a reef and wall site located 500 metres off the coast of El Hierro. The topography features a small platform leading to a cliff with a pronounced drop-off, reaching depths between 10 and 40 metres with an average of 25 metres. Due to the depth and moderate currents, this site is suited for intermediate divers and requires boat access. Visibility ranges from 10 to 30 metres. Species recorded around this area include dusky grouper, black moray, European parrotfish, trumpetfish, great barracuda, common stingray, smooth ray, common octopus, marbled electric ray, fangtooth moray, eagle ray, European common cuttlefish, arrow crab, and harlequin snake-eel.

Punta Las Cañas is a marine dive site located 1000 metres offshore in El Hierro, Canary Islands. This site features a combination of reef, drift, and cave topography, requiring boat access for all dives. Divers can expect depths ranging from 12 to 30 metres, with an average depth of 25 metres. Conditions include mild currents and visibility between 10 and 30 metres. The site is suitable for intermediate divers, with typical dive times of 50 minutes. Night diving is available at this location. Facilities provided include air fills, equipment rental, and guided tours. Hazards to be aware of include sharp coral and the potential for strong currents.

Punta Lajial is a reef and wall site located 500 metres from the shore of El Hierro. The topography features a drop-off that descends from 10 to 40 metres, with an average depth of 30 metres. Divers can access the site by boat or from the shore. Conditions are variable, with visibility ranging from 15 to 50 metres and moderate currents. Due to the depth and potential for strong currents, this site is suited for intermediate divers. Hazards include the significant depth and sharp coral formations. Water temperatures remain between 20C and 23C throughout the year.

Barco Chino in El Hierro offers a diverse underwater landscape defined by reefs, caves, and caverns. Divers navigate through a large rock gate to reach a plateau at 18 metres, which features two prominent towers near the edge. The site is characterised by numerous swim-throughs and holes. A notable feature is a small cave where a halocline phenomenon occurs, created by the mixing of saltwater and freshwater filtered through the mountain. Depths range from 6 to 25 metres with an average of 18 metres. Access is by boat only, and the site is suitable for beginners, with mild currents and visibility typically between 12 and 30 metres.

Cueva de la Arena in El Hierro offers a combination of reef and cave topography suitable for beginner divers. The site features a reef ranging from 8 to 25 metres deep, with an average depth of 22 metres. Access is by boat only, located 100 metres from the shore. Divers encounter mild currents and visibility between 10 and 30 metres. Inside the cave, natural light diminishes quickly, making a torch useful. Species recorded around this area include dusky grouper, great barracuda, trumpetfish, and various moray eels. Water temperatures remain between 20 and 24 degrees Celsius. Hazards include boat traffic, the overhead environment, and sharp coral.