Licensed providers of tourist services in La Paz engaged in whale shark tours report a dramatic drop in the number of individuals sighted in the Bay of La Paz, with just a dozen of the ocean's largest fish being seen. Previous years have provided evidence of more than 70 at a time during the high point of the season
Although there is no definite seasonality, the highest number of the species is recorded from August to January and slowly decline into the month of February. The Bay of La Paz plays host to mostly young whale sharks, about 20 years old and with a size of 4m (12') approximately, although some can measure up to 8m (25')
Although there are few studies on this species, it is known that can live up to 130 years and measure 9 meters at maturity.
Many of the juvenile whale sharks congregate in front of El Mogote, where it has become an overly popular place to view them for tour operators. But the whale shark's territory includes most of the rim to the Bay of La Paz from San Juan de la Costa to Punto Colorado.
Other populations of these fish are known to congregate around Espiritu Santo Island in the Revillagigedo Islands and south of Los Cabos. It is the more adult whale sharks and pregnant females that prefer the open water areas to the Bay of La Paz.