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The blue-ringed octopus is yellow with blue rings that glow ... they generally aren't interested in humans as prey. While shark attacks often make the news and inspire movies, sharks only kill ...

Over 100 different species of shark are found in South African waters ... By doing so he worked out how to track a hunting octopus and so Blue Planet II cameraman, Roger Horrocks, and assistant ...

The bull shark (Carcharhinus leucas ... and invertebrates such as squid, cuttlefish, and octopus. Blue sharks are also known ...