"To take his army to Lanka, Rama had to build a causeway across a strait. King Sugriva and his monkey army began the work, assisted by Hanuman. But King Ravana interfered. He ordered his mermaid daughter to assemble all the fish to spoil the construction. So as rocks and stones were thrown into the sea, they were immediately removed by the fish. Fighting the fish, Hanuman realised that they were acting under orders of the mermaid. She was beautiful, and Hanuman won her love. She ordered the fish to take the stones back, and later, she gave birth to a boy, Machanu, who was half monkey and half fish. When the boy grew up, he went to live in a pond in front of the palace of a giant, serving as a guard."