Piedra Bermeja is a wall and canyon dive site located 1000 metres off the coast of El Hierro. The topography descends from 12 to 35 metres, with an average depth of 15 metres. Divers access the site via boat, which is required due to the location. Conditions include moderate currents that can strengthen quickly, requiring careful planning with a guide. Visibility typically ranges from 10 to 30 metres. The site is suitable for intermediate divers and supports night diving, where the canyon geometry provides shelter from surface chop. Typical dive duration is 40 minutes. Local facilities include air fills, dive shops, and guided tours.

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.

Baja Bocarones is a diverse marine site off El Hierro featuring a combination of reef, wall, and cave topography. The site reaches depths between 7 and 40 metres, with an average depth of 20 metres. Access is exclusively by boat, as the site is located over 5 kilometres from the shore. Divers should be prepared for moderate currents and potential surf conditions. Due to the depth range and current, this site is suited for intermediate divers. Typical dive times are approximately 45 minutes. Facilities including air fills, equipment rental, and guided tours are available through local dive shops.

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.

Baja Fría is a diverse dive site located in the eastern part of El Hierro. The topography features vertical walls dropping hundreds of metres and basalt towers resembling submerged cathedrals. The site is suitable for intermediate divers, with depths ranging from 10 to 30 metres and an average depth of 20 metres. Access is by boat only, and divers should be prepared for moderate currents and sharp coral. Visibility typically ranges between 10 and 30 metres. Species recorded around this area include dusky grouper, great barracuda, eagle ray, European common cuttlefish, fangtooth moray, smooth ray, common octopus, common stingray, marbled electric ray, trumpetfish, European parrotfish, black moray, conger eel, and round fantail stingray.

Hoyos del Feo is a boat-accessible dive site off El Hierro featuring a diverse topography of wall, reef, and cave systems. Divers can explore these structures at depths reaching 20 metres. Visibility is typically between 20 and 30 metres, allowing for clear observation of the cave openings and wall formations. Water temperatures range from 20 to 24 degrees Celsius throughout the year. While the current is generally mild, the site requires intermediate skill due to the overhead cave environment and depth. Divers should maintain precise buoyancy control and monitor air consumption closely when navigating the cave sections. Boat charters are required to reach this location.

El Coral is a reef and wall dive located off El Hierro in the Canary Islands. The site features a topography that descends from the surface to a maximum depth of 30 metres, allowing beginners to remain in shallower sections. Conditions are generally relaxed with mild currents and visibility reaching up to 30 metres. Water temperatures range between 20 and 24 degrees Celsius throughout the year. Access to this site is by boat only. Divers should remain aware of boat traffic in the area and exercise caution regarding potential surf and rip currents during entry. Avoid contact with sharp rocks or coral structures while navigating the site.

El Arco is a diverse marine site featuring a combination of reef, wall, and cave topography. Divers typically begin their descent at depths of less than 10 metres, navigating across rock ridges and ravines before reaching a more uniform seabed with sandy patches. A notable cave located in shallower waters is a key feature of the site. The area is suitable for beginners, with an average depth of 14 metres and a maximum of 18 metres. Access is strictly by boat, located 500 metres from the shore. Conditions include moderate currents and visibility ranging from 10 to 30 metres. Night diving is available at this location.