The Water Horse (2007)

During World War II, a young boy named Angus finds a mysterious egg that hatches into a water horse, a creature from Celtic mythology. He forms a strong bond with the water horse and names it Crusoe. Together, Angus and Crusoe navigate the challenges of war-torn Scotland and the presence of the Loch Ness Monster. They face danger, adventure, and must protect Crusoe from those who want to exploit its existence.