Ojo de Liebre Lagoon (formerly known as Scammon's Lagoon), translated into English as "hare eye lagoon", is a coastal lagoon located in Mulegé Municipality near the town of Guerrero Negro in the northwestern Baja California Sur state of Mexico. It lies approximately halfway between the southern tip of the Baja California Peninsula and the U.S.-Mexico border, opening onto the Pacific Ocean.
The lagoon is within the Vizcaíno Biosphere Reserve UNESCO World Heritage Site, and is a Ramsar wetlands site. It also is the site of the biggest commercial saltworks plant in the world. It is an important habitat for the reproduction and wintering of the gray whale and harbor seal, as well as other marine mammals including the California sea lion, northern elephant seal and blue whale. Four species of endangered marine turtles reproduce there. It is an important refuge for waterfowl in the winter.
Encompassing both a UNESCO World Heritage Site and a major salt plant, Laguna Ojo de Liebre embodies the diverse worlds of natural habitat and industrialization.
Tourism, now closely controlled, was formerly a threat to the gray whales.
Laguna Ojo de Liebre is a large, shallow salty watery habitat that is 9 kilometres (5.6 mi) wide, 4 kilometres (2.5 mi) long and from 5–12 metres (16–39 ft) in depth. Relatively deep channels cut through the lagoon between its broad intertidal flats. The climate is dry and warm; the annual temperature ranges from 18 °C and 22 °C. Annual rainfall can vary from none to 200 mm. The lagoon is surrounded by coastal dunes ranging from 12–15 metres (39–49 ft) in height, which support an unstable community of vegetation, and sandy beaches, some of them with shoals.