Thousands of caimans thrive in Rio’s urban sprawl
By Jenny Barchfield, AP, Oct 17, 2013
RIO DE JANEIRO (AP)—Oh, the glories of Rio that await spectators and athletes at the 2016 Olympics: those beaches, that music, the dramatic mountains. And then there are a few thousand alligator-like creatures slithering through sewage-like lagoons.
Some 5,000 to 6,000 broad-snouted caimans live in fetid lagoon systems of western Rio de Janeiro, conservationists say, and there’s a chance that visitors could have an encounter with one, though experts hasten to add that the caimans, smaller and less aggressive than alligators or crocodiles, are not considered a threat to humans.
Some of the animals have already taken refuge in ponds being built inside the Olympic golf course, which abuts a once pristine mangrove-filled lagoon that’s now thick with tons of raw sewage pumped from nearby high-end condominiums.
In fact, with two decades of anarchic growth decimating natural habitats, the hardy caimans have become an increasingly common sight in the urban heart of western Rio, drawn in part by the scraps tossed to them by humans.
The district is the main hub for 2016 Games and site of the Olympic village, though most events will take place in indoor facilities. One exception is the golf course, where some caimans have taken up residence in lakes. Wildlife on golf courses isn’t uncommon, with alligators spotted on greens in Florida and kangaroos bounding around courses in Australia.
Conservationists say Olympic organizers are beginning to examine what to do about the reptiles on the still-unfinished golf course.
"Caimans are like tanks, a very old species with a remarkable capacity for renovation that allows them to survive under extreme conditions where others couldn’t," said Ricardo Freitas, an ecology professor who runs the Instituto Jacare, or the Caiman Institute, which aims to protect the reptiles. "But the fact of the matter is that their days are numbered if things don’t change drastically."
Freitas has grabbed and tagged 400 of the reptiles over the past decade. He wades into the toxic sludge, slips a metal lasso around their heads and taps expertly on their snapping jaws until he’s able to tape them shut. While local caimans average about 1.5 meters (4.9 feet) long and weigh about 10 kilograms (22 pounds), older males can be up to twice as long and much heavier. Still, Freitas has been known to dive into the water to catch some with his bare hands.
"I was only bitten once, on the hand," he said. "It was fine, although it got super infected because of the state of the water."