The second full‐color volume of the Atlas Oceanogáfico del Golfo de México has recently been published by the Grupo de Estudios Oceanográficos of the Instituto de Investigaciones Eléctricas of México (GEO‐IIE) (see Eos, Feb. 20, 1990, for announcement of volume 1). This second of an eight‐volume series describes the hydrography, baroclinic flows and transports, water masses distributions, and the kinematic properties of anticyclonic‐cyclonic ring pairs (modons) of the central and western Gulf of Mexico (26°−20°40′N, 97°40′−93°W). The data presented and analyzed in this volume were collected during the Argos 86‐1 oceanographic cruise conducted by the GEO‐IIE aboard the R/V Justo Sierra during October and November 1986. Authors of the volume are Víctor M. V. Vidal, Francisco V. Vidal, and Abel Hernández. It has 16 chapters in 715 pages, including 248 full‐page color plates and 35 tables.