Based on the world record nomination from World Records Institute (WRI) and Decision No. WK/USA.INDIA/692/2021/No.148, World Records Union (WorldKings) officially declared Saltwater crocodile is world's largest living reptile on May 11, 2021.
The saltwater crocodile (Crocodylus porosus) is a crocodilian native to saltwater habitats and brackish wetlands from India's east coast across Southeast Asia and the Sundaic region to northern Australia and Micronesia. It has been listed as Least Concern on the IUCN Red List since 1996.
The saltwater crocodile is the largest living reptile and crocodilian known to science. Males grow to a length of up to 6 m (20 ft), rarely exceeding 6.3 m (21 ft) or a weight of 1,000–1,300 kg (2,200–2,900 lb). Females are much smaller and rarely surpass 3 m (10 ft). It is also known as the estuarine crocodile, Indo-Pacific crocodile, marine crocodile, sea crocodile or informally as saltie.
The saltwater crocodile is a large and opportunistic hypercarnivorous apex predator. It ambushes most of its prey and then drowns or swallows it whole. It is capable of prevailing over almost any animal that enters its territory, including other apex predators such as sharks, varieties of freshwater and saltwater fish including pelagic species, invertebrates such as crustaceans, various reptiles, birds, and mammals, including humans.
According to en.wikipedia