A relaxing stroll along Sydney Harbour could have turned deadly for one man and his dog after a brush with one of Australia’s most venomous sea creatures. Jesse Donnison and his dog Otto were walking ...

Blue-ringed octopi are some of the deadliest marine life in the ocean, though they rarely bite humans. There are several species of blue-ringed octopus, part of a genus known as Hapalochlaena. They ...