A female shark belonging to the 'Mustelus hacat' species that was captured west of Angel de la Guardia island in the north of the Sea of Cortes, is shown at the CICESE Science and Technology Research Center at the port of Ensenada in Mexico March 2003. A Mexican marine biologist has discovered a new shark species in the murky depths of the Sea of Cortes, the first new shark find in the wildlife rich inlet of sea in 34 years. Postgraduate student Juan Carlos Perez was on a fishing boat in early 2003 studying sharks from the Mustelus family netted at depths of 660 feet (200 meters) when he noticed some of them had darker skin and white markings. The sharks, slender, dark gray-brown and around 5 feet (1.5 meters) long, turned out to be a new species that Perez and his team have named 'Mustelus hacat,' after the word for shark in a local Indian dialect. Picture taken March 2003. REUTERS/Cortesia Laboratorio de Ecolog