Anacondas Facts and Pictures National Geographic

The green anaconda is the largest snake in the world, when both weight and length are considered. It can reach a length of 30 feet (9 meters) and weigh up to 550 pounds (227 kilograms).To picture how big that is, if about five ten-year-olds lie down head to foot, they'd be about the length of this huge snake.

And it'd take about 11 kids to weigh as much as one anaconda.

Green Anaconda Pics,Anaconda National Geographics,Anaconda facts

These snakes can be as big around as a grown man. They have some giant relatives, too.The green anaconda is a member of a family of snakes called constrictors. Constrictors are not venomous snakes. They don't kill prey by delivering venom through a bite. Instead, constrictors wrap their bodies around their prey and squeeze until it stops breathing. The giant snake opens its mouth wide enough to swallow its victim—sometimes fish or caiman (relatives of crocodiles) and even jaguars and small deer.
Anaconda jaws are held together with stretchy ligaments so they can open wide enough to swallow prey whole. The green anaconda is an aquatic snake. It lives in swamps, marshes, and slow-moving rivers. It's nocturnal, or active at night. An anaconda will hunt on land, but it prefers to stay in the water, where its huge size feels less bulky. The green anaconda can move swiftly both underwater and at the surface. To hunt, it lies at the surface of a pond or stream waiting for an animal to stop by for a drink. Its nostrils are located on the top of its snout, so it can breathe while almost entirely submerged. Source