North of the island faces greatest risk of eruptionOne of the most heavily populated areas in the north east of the island has experienced the highest level of volcanic activity over the past 11,000 years, and it is therefore likely that this volcanic activity will continue in future.
Unlike on Hawaii, flank movements at Canary Islands appear to occur mainly during volcanic episodes. Tsunamis are less common in the Atlantic Ocean than in the Pacific or the Indian oceans, but they have been observed e.g. after the 1755 Lisbon earthquake.
The area with the highest seismic activity in the Canary Islands, not directly related to volcanic activity, is located in the channel between the islands of Gran Canaria and Tenerife. In this zone a continuous amount of earthquakes is concentrated located since seismic instrumentation is deployed.
The Canary Islands were created by a series of volcanic eruptions millions of years ago. The oldest of these is Fuerteventura, which is thought to be over 20 million years old, followed by Lanzarote, Gran Canaria, Tenerife, La Gomera, La Palma and El Hierro, respectively.
One of the most enigmatic sharks in the world, that also lives in the Canary Islands waters, is the hammerhead shark. In Las Palmas de Gran Canaria, its presence has been documented several times. It is quite a spectacle for those divers who have been lucky enough to come across with one of these specimens.
The African coast lies only ~ 313 km from Mt Teide, but this is greater than the visibility range V ~ 253 km. There are reports of Africa being visible from Fuerteventura.
In the area you have selected (Santa Cruz de Tenerife) tsunami hazard is classified as medium according to the information that is currently available. This means that there is more than a 10% chance of a potentially-damaging tsunami occurring in the next 50 years.