Sharks live in the coastal waters of eastern and western Australia. From small and shy reef sharks to powerful large white sharks. In addition, avoid swimming in the sea during sunrise and sunset, as the likelihood of shark attacks is often higher.

There are many spiders in Australia. Most of these species are not lethal, but some of them have bites that can be fatal if left untreated. There are two types of poisonous spiders that should be watched out for in Australia, namely the Sydney funnel-web spider and the redback spider.

The largest reptile in the world is the saltwater crocodile, which can be found in the northern regions of Australia, Queensland, Western Australia, and the Northern Territory. This crocodile is known for its aggressive behavior. "Salties," as they are called by Australians, live in both saltwater and freshwater. With a length of up to 7 meters (23 feet), this crocodile has an incredible swimming ability and can leap high out of the water to attack its prey.

In the waters around northern Australia, there are poisonous jellyfish, especially box jellyfish, which are the most venomous creatures in the world. Its tentacles containing venom can cause heart attacks in humans and lead to death.

The largest reptile in the world is the saltwater crocodile, which can be found in the northern regions of Australia, Queensland, Western Australia, and the Northern Territory. This crocodile is known for its aggressive behavior. "Salties," as they are called by the Australian people, live in both saltwater and freshwater. With a length of up to 7 meters (23 feet), this crocodile has an incredible swimming ability and can leap high out of the water to attack its prey.