The Kraken is a legendary sea monster said to dwell off the coasts of Norway and Greenland. With gigantic tentacles, it has been local sailors' nightmare for generations.
A monstrous sea serpent, the Leviathan is another legend that has captured the imagination of many cultures. The tales of its deadly grip and humongous size echo across centuries.
Nessie, as she's affectionately known, supposedly resides in Scotland's Loch Ness. Despite many attempts, conclusive evidence of her existence has yet to be found, but legends persist.