Human habitation of the Australian continent is estimated to have begun between 42,000 and 48,000 years ago, possibly with the migration of people by land bridges and short sea-crossings from what is now Southeast Asia. It would be discovered by the Europeans which would then become a penal colony for British criminals around 1788. Since then Australia has gone through major socioeconomic changes and is now one of the wealthiest countries in the world. What hasn’t changed much is the fact that Australia hosts some of the world’s most dangerous creatures. It’s true that when it comes to creepy, deadly, and poisonous living organisms Australia is up there with the likes of Africa. However, and despite the fact that Australia has so many of the world’s most venomous and toxic “beasts”, according to the country’s death statistics, the most dangerous animals to humans are — believe it or not — horses (due to accidents while riding them). Nevertheless, sharks, spiders, and snakes still get the majority of bad press and today we are going to share with you 25 of the most dangerous animals in Australia (which might be wise to avoid).
The reef stonefish’s incredible ability for camouflage is ridiculous! Often looking like an encrusted rock or lump of coral, the species is widely distributed throughout tropical, marine waters of the Indo-Pacific region. It has stout dorsal fin spines that can inject an extremely poisonous venom capable of killing a human if it goes untreated.
Often cited as the world’s most venomous snake, the inland taipan is far from the most dangerous. Unlike its congener, the common and fiery-tempered coastal taipan, this shy serpent is relatively placid and rarely encountered in its remote, semi-arid homeland. Make no mistake, though, if you get bitten by one your life is definitely in danger!
One of the most spectacularly colored snakes in Australia, Collett’s snake is a shy and rarely seen inhabitant of Queensland’s black soil plains. However, if you are unlucky enough to be bitten by one you have to rush to the nearest hospital because its poison can kill you pretty quickly.
The common lionfish is a tropical species found widely throughout the Indo-Pacific region. In Australia it’s found in southwestern Western Australia, around the north of the country and in the south to the southern coast of New South Wales. It’s considered to be an extremely venomous fish. The venom found in the needle-sharp dorsal, pelvic and anal fins, though not necessarily deadly to an otherwise healthy human being, will cause an immense amount of localized pain, swelling and, in some rare cases, death if not treated properly.
Yellow-bellied sea snake
The highly venomous yellow-bellied sea snake is the most widely distributed snake in the world, as well as the most aquatic, never having to settle on land or the seafloor its entire pelagic life. It is a species of sea snake found in tropical ocean waters, and is particularly famous in Australia where it spreads terror every summer to swimmers and surfers alike, since its bite has been usually deadly in most of the cases.
Most Australians know of tiger snakes and are aware of their fearsome reputation, though few will ever encounter one. Unfortunately, this species is much maligned because of its aggressive nature and toxic venom; however, the tiger snake should be recognized as a great survivor, superbly adapted to some of the most inhospitable environments in Australia.
The tiger shark is a species of requiem shark and the only living member of the genus Galeocerdo. Commonly known as the “sea tiger,” the tiger shark is a relatively large macro predator, capable of attaining a length over five meters (sixteen feet). It is found in many tropical and temperate waters, and it is legally to blame for many attacks on humans (especially surfers) in the waters off Australia.
Mulga snake (King brown snake)
A bite from this snake would be treated with black snake anti-venom. As with many Australian snakes the color is variable, with most specimens being mid-brown, some have a coppery tinge, and others are quite dark. Often, each individual scale has a dark and a light area giving the snake a subtle pattern. King browns are robust snakes with a wide head and large specimens will reach a length over 2.5 meters.
Cone shells, also known as killer cone snails, are notorious for possessing a very powerful sting which they use to capture prey. Many people have been fatally wounded when handling live cones, especially those that feed upon mollusks and fish.
Common death adder
There are several species of death adders in Australia but the common death adder is the only one found in Sydney. They have relatively large fangs and toxic venom and, before the introduction of anti-venom, about sixty percent of their bites to humans were fatal.
The blue-ringed octopus is recognized as one of the world’s most venomous marine animals. However, and despite being considered one of the deadliest animals in Australia, this small octopus has been responsible for only three recorded deaths in the twentieth century.
The intimidating-looking saltwater crocodile has a wide snout compared to most crocodiles. However, it has a longer muzzle than the mugger crocodile and its length is twice its width at the base. It’s responsible for multiple attacks (some of them fatal) in Australia, where it’s considered one of the most deadly animals.
Eastern brown snake
The eastern brown snake is widespread throughout eastern Australia, from northern Queensland to South Australia, with isolated populations occurring in central and western parts of the Northern Territory. This medium-sized snake, with a slender to moderate build and a smallish head barely distinct from the neck might not look as intimidating as other snakes but its bite is one of the deadliest in the world since it’s considered the second-most poisonous animal in the world.
Irukandji jellyfish are tiny but extremely venomous jellyfish that inhabit the waters off Australia. They are able to fire their stingers into their victim, causing symptoms collectively known as Irukandji syndrome. An interesting thing about the Irukandji jellyfish is that it also has stingers on its belly whereas most jellyfish have stingers only on their tentacles. Biologists have yet to discover the purpose behind this unique characteristic.
The Indo-Pacific or Australian box jellyfish is claimed to be the most venomous marine animal known to man and its sting is often fatal. This extremely poisonous marine stinger frequents Australia’s northern oceans all year round. However, it is particularly dangerous during the wet season, from about November to April.
25 Most Dangerous Animals In Australia You Don’t Want To Mess With