Canary Islands La Gomera taking 1000 captives to be sold as slaves. Another noteworthy attack occurred in 1797, when Santa Cruz de Tenerife was attacked by a British fleet under Horatio Nelson on 25 July. The British were repulsed, losing almost 400 men. It was during this battle that Nelson lost his right arm. The sugar-based economy of the islands faced stiff competition from Spain's American colonies. Low prices in the sugar market in the 19th century caused severe recessions on the islands. A new cash crop, cochineal ("cochinilla"), came into cultivation during this time, saving the islands' economy. During this time
La Gomera voyage to the New World, commanding a fleet of 17 vessels. He visited La Gomera for the last time in 1498 on his third voyage to the Americas. The house in San Sebastián in which he is reputed to have stayed is now a tourist attraction. An autosomal study in 2011 found an average Northwest African influence of about 17% in Canary Islanders with a wide interindividual variation ranging from 0% to 96%. According to the authors, the substantial Northwest African ancestry found for Canary Islanders supports that, despite the aggressive conquest by the Spanish in the 15th century and