The blue-ringed octopuses (genus Hapalochlaena) are three (or perhaps four) octopus species that live in tide pools and coral reefs in the Pacific and Indian Oceans, from Japan to Australia (mainly around southern New South Wales and South Australia, and northern Western Australia). They are recognized as some of the world's most dangerous marine animals.


In the UK one of the more dangerous sea creatures is the weever fish. They are often found in shallow, sandy water, particularly around Cornwall and the south west, and have venomous spines on their backs. Being stung is very painful and can result in severe swelling. Stings are generally caused by standing on them unawares while barefoot, so can easily be ...

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