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Sexual size dimorphism in Eunectes is the opposite of most other vertebrates. Females are larger than males in most snakes, and green anacondas have one of the most extreme size differences, where females average roughly 32 kg (70 lb) and males average only around 7 kg (15 lb).
The green anaconda (Eunectes murinus), also known as the giant anaconda, emerald anaconda, common anaconda, common water boa, or southern green anaconda, is a semi-aquatic boa species found in South America and the Caribbean island of Trinidad. It is the largest, heaviest, and second longest snake in the world, after the reticulated python.
A new snake species, the northern green anaconda, sits on a riverbank in the Amazon's Orinoco basin. “The size of these magnificent creatures was incredible," Fry said in a news release earlier ...
Among the colubrids, the most diverse snake family, the largest snakes may be the keeled rat snake (Ptyas carinata) at up to 4 m (13 ft). [76] The genus Drymarchon also contains some of the largest colubrids such as the eastern indigo snake ( Drymarchon couperi) and the indigo snake ( Drymarchon corais ) which can both reach lengths of almost 3 ...
The new species, described in the journal Diversity, diverged from the previously known southern green anaconda about 10 million years ago, differing genetically from it by 5.5 per cent.
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 Loggerhead sea turtle (Caretta caretta) reaches a maximum size of 2.1 m (7 ft) and weight of 545 kg (1,202 lb), while the Green sea turtle (Chelonia mydas) reaches a maximum weight in the range of 395 to 500 kg (871 to 1,102 lb). [46] The Flatback sea turtle (Natator depressus) may reach a weight of up to 350 kg (770 lb). [97]
[6] [7] [17] Notably, the northern green anaconda's smaller range makes it much more vulnerable than its southern neighbor. [ 5 ] As with other anaconda species, main threats include conflict with humans, as well as habitat degradation and fragmentation caused by agriculture, climate change and oil extraction in the region.