Among the ocean's most dangerous creatures, size isn't everything; in fact, some of the smallest marine animals are among the most dangerous. For example, the blue-ringed octopus has an extremely ...

Octopuses are often admired for their intelligence and ability to camouflage. Yet, some hide a threat beneath their tentacles. Among them, blue-ringed octopuses of the Hapalochlaena genus stand out ...

In 1799, George Shaw, a curator in the natural history department of the British Museum, received a strange skin in the mail.