What are some structural adaptations of the blue-ringed octopus?

•They have a reduced ink sac size •They have sharp beaks for biting

•They are very fast and can shoot away from danger

•They can shoot venom into the water

•They have a usually deadly venom

•They have blue rings to ward off danger

•They are very small, about the size of a Golf ball, and can easily hide from danger

•They have suction cups to enable them to hold on to almost anything with a very strong grip