A dolphin leaps in the Cortes Sea in San Felipe, Baja California State, Mexico on March 18, 2016. The Mexican Navy is carrying out an operation to arrest illegal fishermen using nets to catch the Totoaba macdonaldi fish, because the illegal gill-nets frequently trap the rare Phocoena sinus or "vaquita marina in Spanish - the world's smallest porpoise - which is endemic to the region and in danger of extinction. AFP PHOTO/Hector GUERRERO / AFP / HECTOR GUERRERO (Photo credit should read HECTOR GUERRERO/AFP/Getty Images)
