Sri Lanka is ranked amongst the world’s twenty five biodiversity hot spots. As a country with high rate of endemism it has many faunal groups including birds , mammals , reptiles and amphibians which you can not find anywhere in the world. It is world renowned as one of the best places to watch elephants and leopards for nature enthusiastic and photographers.
There are season for elephant gathering where large concentration of wild elephants together can be seen during that time at a place known as Minneriya in the north central province of the country. Primate safaris are arranged with cultural tours as it is possible to find wide range of primates in place surrounded by cultural heritages mainly in the dry zone. During the early part of the year ( January-April) , the largest animal ever lived in the world you may guess as ‘ blue whale’ can be seen in off shores of southern city Galle. Sinharaja, the tropical rainforest of the country is the place to glue one’s eyes on to the world’s largest mixed species of birds flocking together.
One of the key reasons which makes Sri Lanka a popular wild life destination is the availability of expertise , well trained field guides and simple photographic guides, booklets and posters of key wild life attractions such as elephants, leopards, birds, butterflies , primates and floral species to the enthusiast. Sri Lankan tour operators too are equipped with sophisticated technologies , marketing strategies and high caliber service levels to attract ever increasing tourist both from west and east with wild life as main interest for significant proportion of them. Communication is no barrier as in Sri Lanka as tourist industry professionals are well equipped with skills in English and even with other foreign languages to respond the needs of the foreign visitors effectively.
Mammals
Sri Lanka has one of the richest diversity of amphibians in the world, containing over 119 species of amphibians up to 2015, with 109 endemic species. and has been claimed to have the highest amphibian species density in the world though that has been challenged. 52 species of amphibians in Sri Lanka are threatened, all but one of which are endemic.
Mammals
Sri Lanka is home to roughly 123 species of mammals, 41 of which are threatened (9 critically). 16 of the species are endemic, of which 14 are threatened, including the large Sloth Bear, the endemic Sri Lanka Leopard and Sri Lankan Elephant and the Sambar. Bats have the highest amount of species (out of 200 mammalian orders), with 30 different species. Sri Lanka's surrounding waters are home to 28 species of Cetaceans.
Reptiles
Sri Lanka currently contains 171 species of reptiles, of which 56 are threatened and 101 are endemic. Most of the reptiles are snakes and the largest are two species of Crocodile, the Mugger crocodile and Saltwater Crocodile.
Amphibians
Sri Lanka has one of the richest diversity of amphibians in the world, containing over 119 species of amphibians up to 2015, with 109 endemic species. and has been claimed to have the highest amphibian species density in the world though that has been challenged. 52 species of amphibians in Sri Lanka are threatened, all but one of which are endemic.
Sri Lanka is home to 227 species of birds (though some past estimates put it as high as 486), 46 of which are threatened (10 critically).
Fish
Cherry barb (puntius titteya) is a tropical fish which is native to Sri Lanka, but introduced populations are established in Mexico and Colombia.
Sri Lanka contains 93 species of freshwater fish, and 50 of which are endemic to the country. 28 species are categorized as threatened by IUCN. There are 8 species of brackish water fish that also come to freshwater, and 24 introduced exotic fish species.
Butterflies
245 butterflies species are recorded from Sri Lanka of which 24 are endemic to the island
Insects
Insects belonging to all 32 orders except Grylloblattodea have been recorded from the Sri Lanka.The total number of insect species recorded from the island is about 11,144. Coleoptera number 3033 species , Lepidoptera 2158 species, and Hymenoptera 1519 species.
Bees
There are about 70,000 bee species of bees described in the world with nearly 450 genera and 7 families. Out of them, Sri Lanka comprises 148 species included to 38 genera and 4 families.
Odonates
Main article: List of odonates of Sri Lanka
Damselflies categorized in to Suborder: Zygoptera; and dragonflies into Suborder: Anisoptera. There are 121 described species within 13 families can be found in Sri Lanka. 59 species from them are endemic.
Aphids
Main article: List of aphids of Sri Lanka
Sri Lanka comprises 74 species in 46 genera and 6 families. 2 endemic aphid species found on Sri Lanka.
Ants
Sri Lanka is home to 181 species of ants that included to 61 genera and 10 subfamilies. One endemic genus Aneuretus is also included to the list.
Freshwater Crabs
Main article: List of freshwater crabs of Sri Lanka
All recorded 51 species along with 5 genera are totally endemic to Sri Lanka. 98% of those crabs are IUCN categorized as threatened, endangered or critically endangered animals.
Main article: List of non-marine molluscs of Sri Lanka