Title: Cumbre Vieja tsunami hazard
Content:  inactive since then and prior eruptions did not form such faults, which do not have the appearance of graben faults. Geodesy has not identified ongoing movement of the flank. 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. Apart from fault lines, submarine volcanoes such as Kick'em Jenny and landslides are sources of tsunamis in the Atlantic. Tsunamis are not unique to the sea; a landslide in the Vajont Dam in 1963 caused a megatsunami resulting in around 2000 fatalities, and evidence of past tsunamis is recorded from Lake Tahoe.
Title: Teletsunami
Content:  Destructive teletsunamis have been recorded as happening once or twice a century. One of the oldest teletsunamis reported was in November 1755, when a major earthquake known as the 1755 Lisbon earthquake (or the Great Lisbon earthquake) resulted in a teletsunami that ravaged Lisbon, Portugal. The teletsunami crossed the Atlantic and was noticed throughout the eastern Caribbean, from Barbados to Antigua and as far west as Cuba. The amplitude of the tsunami was maintained at about 2 –, and waves continued to arrive for many hours. No damage or casualties were reported. European sources also reported that the Azores fracture zone generated a second teletsunami in March 1761 (1761 Portugal 
Title: Teletsunami
Content:  but no local confirmed observations were made in the Caribbean. The most recent teletsunami resulting in mass casualties occurred in 2004 off the northern coast of Sumatra, Indonesia. Caused by an undersea megathrust earthquake, it led to nearly 300,000 deaths in several countries along the Indian Ocean. A few destructive teletsunamis are generated each century by large earthquakes around the Pacific Rim. Such tsunamis can propagate across the entire Pacific in less than 24 hours, and cause widespread destruction along shorelines located thousands of miles from the source. The most recent of these was generated by the 2011 Japan earthquake, which crushed three dozen boats in Santa Cruz, California.
Title: 2004 Indian Ocean earthquake and tsunami
Content:  The last major tsunami in the Indian Ocean was about A.D. 1400. In 2008, a team of scientists working on Phra Thong, a barrier island along the hard-hit west coast of Thailand, reported evidence of at least three previous major tsunamis in the preceding 2,800 years, the most recent from about 700 years ago. A second team found similar evidence of previous tsunamis in Aceh, a province at the northern tip of Sumatra; radiocarbon dating of bark fragments in the soil below the second sand layer led the scientists to estimate that the most recent predecessor to the 2004 tsunami probably occurred between A.D. 1300 and 1450. The 2004 earthquake and tsunami combined is the world's deadliest natural disaster since the 
Title: Atlit Yam
Content:  It is assumed that the contemporary coast-line was about 1 km (a half-mile) west of the present coast. Piles of fish ready for trade or storage have led scientists to conclude that the village was abandoned suddenly. An Italian study led by Maria Pareschi of the Italian National Institute of Geophysics and Volcanology in Pisa indicates that a volcanic collapse of the eastern flank of Mount Etna 8,500 years ago would likely have caused a 10-storey (40 m or 130 ft) tsunami to engulf some Mediterranean coastal cities within hours. Some scientists point to the apparent abandonment of Atlit Yam around the same time as further evidence that indeed, such a tsunami did occur.
Title: Cumbre Vieja
Content:  may have killed several hundred people. According to Cooke, damage was inflicted on islands several hundreds of kilometres from Ritter Island. There is no record of inundation occurring at trans-oceanic distances. The tsunami was witnessed by several Europeans living on many of the islands. Murty et al.; (2005) claim that it is almost impossible for a trans-oceanic tsunami to be generated in the basin of the Atlantic Ocean, which — if correct — supports the work by many other researchers that the failure of the western flank of the Cumbre Vieja would be unlikely to generate a "mega-tsunami". Pérez-Torrado et 
Title: 1585 Aleutian Islands earthquake
Content:  The Hawaiian Islands have been known to be hit with large, distant-sourced tsunamis and locally sourced megatsunamis. The last known megatsunami occurred more than 10,000 years ago. Throughout the Holocene, tsunamis have repeatedly struck the islands leaving behind evidence of inundation in the form of deposits. Historical legends passed down by the natives have also described tsunamis hitting the island. One of these tsunamis struck Kāne‘ohe Bay on the island of Oahu. Archaeological and historical evidences showed that the tsunami occurred sometime between 1040 and 1280 A.D. A chant composed between 1500 and 1600 described a tsunami-like event occurring on the western coast of Molokai. The chant is believed to be the oldest record of a tsunami in Hawaii. The chant goes: "'The sun shines brightly at Kalaeola which sank into the sea. A huge wave came and killed its inhabitants, scattering them and leaving only Papala'au; their cries are all about. '"
Title: Aleutian Trench
Content:  generated a tsunami which killed 5 US Coast Guard personnel on the island, destroying the Scotch Cap Light, and causing damage on other Aleutian Islands and North and South America. In Hilo, Hawaii, the tsunami killed 159 and caused extensive damage. ; March 9, 1957 Andreanof Islands earthquake: This magnitude 8.6 earthquake occurred south of the Andreanof Islands. The earthquake itself caused damage on Adak Island and Umnak Island and generated a Pacific-wide tsunami. The tsunami destroyed two villages in the Hawaiian Islands. The tsunami was recorded as far away as Chile. ; March 27, 1964 Alaska earthquake: Lasting four minutes and thirty-eight seconds, the magnitude 9.2 megathrust earthquake remains the most 
Title: Teletsunami
Content:  In 1964, a large tsunami originated as a result of the 9.2 earthquake from the Gulf of Alaska. As a result, California observed 20 – waves and some regions sustained heavy damages from flooding, resulting in 11 deaths. Other regions such as Alaska, British Columbia, Washington, Oregon, and Hawaii were also impacted by the teletsunami to varying degrees.
Title: La Palma
Content:  the potential to cause a tsunami which may devastate the east coast of the USA and other locations". The claim was also explored in a BBC docu-drama called End Day which went through several hypothetical scenarios of disastrous proportions. In 2002 the Tsunami Society (Pararas-Carayannis, 2002 ), published a statement stating "... We would like to halt the scaremongering from these unfounded reports..." The major points raised in this report include: (Although, see Fogo, Cape Verde for an example of a geologically recent Atlantic megatsunami.) A survey carried out by Moss et al.; (1999) reported that the western flank is stable with no indication of 

Question: when was the last tsunami in the atlantic ocean?
Answer: Île Saint-Joseph.