[2] In 1987, the Espinosa Sánchez family moved to La Paz from Mexico City with Paola, who was barely nine months old.

She won a bronze medal in the Women's Synchronized 10-meter Platform at the 2008 Summer Olympics in Beijing on 12 August 2008 with a score of 330.06.

Espinosa won the gold medal in the 10-meter platform at the 2009 World Aquatics Championships in Rome with a score of 428.25.

On Tuesday, 31 July 2012, in the Olympic Games in London, she won a silver medal in the 10-meter synchronized platform together with Alejandra Orozco, with a score of 343.32.

On 26 October 2011, in the city of Guadalajara, Jalisco, Mexico, she won the gold medal in the 10-meter platform.