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RIO DE JANEIRO, BRAZIL - The current number of Guiana Dolphins (called "boto cinza" in Portuguese), endangered for decades in Rio de Janeiro, is the lowest ever recorded.

In the 1980s the cetaceans' population totaled 400, but today there are 29, with only four calves. In the last five years, 16 have died, seven of them newly born.

"The animals reproduce, but many calves don't survive," alerts José Lailson Brito Junior, coordinator of the Maqua Project and professor at the State University of Rio de Janeiro (UERJ).

According to the researcher who has been monitoring the life of the Guiana . . .

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