An array of vaquita porpoise models were displayed during an event organized by World Wildlife Fund (WWF), outside the National Palace in Mexico City, Mexico on Saturday. /CFP Photo

Known as "little sea cows," they are also considered as world’s smallest porpoise. /CFP Photo

The organization delivered a message on the danger of fishing vaquita, which are estimated at only around 30 now in the Gulf of California. /CFP Photo

The purpose was to inform people of the critical situation and raise awareness on saving endangered porpoise. /CFP Photo