In 2000, locals of Bahia los Angeles noticed problems with the marine animal populations in the bay, so the people of the town decided to work with CONANP to increase protections by conducting a study on the whale sharks that migrate to the bay each year (CONANP – 9). After growing awareness of the benefits of the area to other marine life as well as the benefits to the local economy, the biosphere reserve was named in 2007 (CONANP – 9).
Located in the northern part of the Gulf of California, the Bahía de los Ángeles Biosphere Reserve comprises an area of over 380,000 hectares (CONANP -9). The bay supports high levels of biodiversity in marine flora and marine invertebrates. Scientists have identified twenty-one species of sponge, including three endemic species, thirteen species of stony coral, several stars, sea urchins, and mollusks (CONANP – 10). Additionally three of the thirteen species of breeding lobster are found in the bay (CONANP -10).
Look out onto Los Angeles Bay and you are sure to see pelicans and boobys diving into a ruffled patch of water which marks the spot where a huge swarm of small swimmers has risen to the surface to escape some large fish below, only to be devoured from above instead. — Joseph Wood Krutch, The Forgotten Peninsula
Sea turtles, including the loggerhead (Caretta caretta), hawksbill (Eretmochelys imbricata), olive ridley (Lepidochelys olivacea), and eatherback (Dermochelys coriacea) live in the region. The green turtle (Chelonia mydas) is the most common and between the months of August and November nests are made on many beaches. Aside from sea turtles, there are several species of whale and cetaceans that migrate to the bay. During different parts of the year, visitors may see the great blue whale, humpback, minke, or grey whale. Sharks, rays, and dolphins also frequent the area.