The sands of Watergate Bay in Cornwall were transformed into a canvas for a unique art installation courtesy of the Eden ...

A blue-ringed octopus is one of several species of small octopuses that display small, bright blue rings on their body when they are alarmed. They live in tide pools and shallow reefs.

There are four species of blue-ringed octopus and each one contains tetrodotoxin, which is one of the most deadly toxins in the world. (Image credit: Khaichuin Sim via Getty Images) ...

The blue-ringed octopus appears grey or beige with light brown patches when it is at rest, but when agitated its 50 or 60 bright blue rings appear and pulsate with color, as a warning.

Picture an octopus that could be deadly to humans. You’re probably thinking of a large creature, and not one that is the size of your palm. But indeed, that’s the blue-ringed octopus, one of several ...