Watch as thousands of teeny weeny baby octopuses hatch! This video was captured by a diver in Puget Sound, about 30 meters below the surface. These octopuses are only millimeters in length when they hatch but can grow to weigh more than 15 kilograms and with an arm span of more than 4 meters. Yikes! The giant Pacific octopus can lay thousands of eggs at a time, then keeps the eggs aerated and clear of algae by cleaning them with their suckers and blowing water over them. The more you know!