SPECIES IN THE SEA OF CORTES
Some representatives of the fish beauty found in the Sea of Cortés are:
Another very colorful group of animals that live in the area, are Nudibranchs, small mollusks, toxic to their potential predator but harmless to humans.
The majority of them are not larger than 2 inches and their size invite all to dive with a lamp, a ruler and a magnifying glass.
Hans Bertsch, PhD., researcher on the subject for more than 30 years in the Sea of Cortés, has confirmed the existence of more than 117 different species of Nudibranchs within Bahía de los Ángeles, naming some of them with names such as Mexichromis, colorful Mexican, and Trivettea papalotla, Ivette's sea butterfly.
For some large mammals Canal de Ballenas (Whales Channel) geomorphological and oceanographic characteristics, produced by summer upwelling, strong winds and tides, that bring water from the deep to the channel, make it an important area for cetaceans; there have been 16 large mammals recorded in a year. Some of the species that can be found are: fin whales (Balaenoptera physalus), tropical rorquals (Balaenoptera edeni), Humpback Whales (Megaptera novaeangliae), minke Whales (Balaenoptera acutorostrata), gray Whales (Eschrichtius rubustus) and Blue Whales (Balaenoptera musculus).
Three of the 13 recognized sea lions rookeries (Zalophus californianus californianus) are within the Bahía de los Ángeles Biosphere reserve, in the coasts of Angel de la Guarda and Granito islands. Additionally resting rookeries are known to be at Roca Vela, Roca Blanca, Between Estanque Island and Isla Ángel de la Guarda, at El Rasito Islet in Bahía de las Ánimas and Isla Calavera, most of individuals are either adults or juveniles.