Roman Catholic Diocese of San Cristóbal de La Laguna Roman Catholic Diocese of San Cristóbal de La Laguna The Roman Catholic Diocese of San Cristóbal de La Laguna (), also called Diocese of Tenerife or Diocese Nivariense, is a diocese located in the city of San Cristóbal de La Laguna in the Canary Islands in the Ecclesiastical province of Sevilla in Spain. The diocese includes the islands of Tenerife, La Palma, La Gomera and El Hierro, in the province of Santa Cruz de Tenerife. The bishop of this diocese is Bernardo Álvarez Afonso. The arrival of Christianity to the western islands of the Canaries took place (as in the
Tabarca reserve called "Reserva marina de la Isla de Tabarca", declared a Zone of Special Protection for Birds by the EU, with a varied marine fauna (sea bass, grouper, conger eel, gilthead etc.). It is surrounded by very clear and unpolluted waters. The island is formed by materials of volcanic origin on top of which limestone and quaternary deposits have settled. Tabarca was the last Spanish Mediterranean location where the critically endangered Mediterranean monk seal successfully bred before it became extinct in this part of its range in the 1960s. This proves the high quality of the waters around the island