Born in Bilbao in 1942. Her artistic learning takes place initially in the Ascensio Martiarena workshop in San Sebastián where she acquires a perfect command of drawing. In 1958 she moved to Madrid to attend drawing and painting classes at the Círculo de Bellas Artes and the Prado Museum. During the four years that she lives in the capital she also studies linoleum and etching in the workshops of Dimitri Papageorgiu and Enrique Ortiz respectively. This double interest in painting and engraving takes her, in 1966, to Holland awarded a scholarship by the Diputación de Bizkaia and the Dutch government, where she extends her knowledge in the Rijksakademie from Amsterdam. Between 1969 and 1971 she settled in Paris where she assimilated the figurative current that she interpreted from a symbolist vision. Upon his return to Bilbao she began an intense exhibition activity through different Spanish and European capitals, becoming one of the most popular figures of Basque artistic culture. In 1978 she created Marijaia, the emblematic figure of the Aste Nagusia of Bilbao, which led her to receive the Sabino Arana Prize in 2012 for her contribution to the dissemination of the Bilbao festival.
She has worked and researched in different artistic fields, masterfully highlighting in painting with a loose stroke of impressionist root and in engraving, where she uses different techniques (etching, linoleum, woodcut ...) depending on her plastic needs. In her work, Mari Puri Herrero reflects a disturbing world in which the real and the fantastic are confused. The mastery of drawing and color, compositional balance and an overflowing imagination allow her to create a personal iconography that, as a guiding thread, she has reinterpreted throughout her career. Imaginary and archetypal beings populate the scenarios and landscapes devised by the artist trying to offer a universe of poetry and fabulation.