Creatures of the Deep (S10E07)

In August 2014, Russian astronauts aboard the International Space Station stumbled upon an astonishing sight—living sea plankton had taken residence on the windows. This revelation raises a tantalizing question: if marine life can endure in the cosmos, could the oceans harbor alien beings as well? Throughout history, countless legends have emerged about mysterious creatures lurking in our waters. While many dismiss these myths, scientists estimate that Earth's oceans conceal between 700,000 and one million species, with two-thirds yet to be identified. Given that some marine organisms can survive in space, could stories of legendary beasts like the Kraken and Loch Ness Monster hint at extraterrestrial life hiding in our depths?