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Anacondas or water boas are a group of large boas of the genus Eunectes. They are a semiaquatic group of snakes found in tropical South America. Three to five extant and one extinct species are currently recognized, including one of the largest snakes in the world, E. murinus, the green anaconda. [3] [4] [5]
The bulk of a 5.2-metre (17 ft 1 in) green anaconda is comparable to that of a 7.4-metre (24 ft 3 in) reticulated python. [18] Reports of anacondas 11–12 m (35–40 ft) or even longer also exist, but such claims must be regarded with caution, as no specimens of such lengths have ever been deposited in a museum and hard evidence is lacking. [ 19 ]
It is one of the heaviest and longest snakes in the world, with one specimen reported by a newspaper to have been 6.3 metres (21 ft) long. Like all boas, it is a non-venomous constrictor. E. akayima is estimated to have diverged from its closest relative between 5 and 20 million years ago, originally separated by the Vaupés Arch.
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A video shared online shows the scale of these 20-foot-long (6.1-meter-long) reptiles as one of the researchers, Dutch biologist Freek Vonk, swims alongside a giant 200-kilo (441-pound) specimen.
The Boidae, commonly known as boas or boids, [3] are a family of nonvenomous snakes primarily found in the Americas, as well as Africa, Europe, Asia, and some Pacific islands. Boas include some of the world's largest snakes, with the green anaconda of South America being the heaviest and second-longest snake known; in general, adults are medium ...
Eunectes deschauenseei, commonly known as the dark-spotted anaconda [1] [4] or De Schauensee's anaconda, [5] is a species of snake in the subfamily Boinae of the family Boidae. The species is native to northeastern South America. Like all boas, it is a nonvenomous constrictor. No subspecies are currently recognized. [4]
Henophidia is a former superfamily of the suborder Serpentes that contains boas, pythons and numerous other less-well-known snakes. [1]Snakes once considered to belong to superfamily Henophidia include two families now considered Amerophidia (Aniliidae – red pipe snakes, and Tropidophiidae – dwarf "boas" or thunder snakes), three families now considered Uropeltoidea (Cylindrophiidae ...