An octopus has been spotted changing colour in ink-credible footage from a Welsh beach. Beachgoers captured the rare sight of the curled octopus while locking in rock pools on Menai Bridge beach ...

This algae octopus, Abdopus aculeatus, has just inked. Octopuses release ink when they feel threatened; the ink swirls into a dark cloud that distracts predators. The adaptation is ancient ...